Online Education for RS Aggarwal Class 9 Solutions Chapter 13 Volume and Surface Area Ex 13B

These Solutions are part of Online Education RS Aggarwal Solutions Class 9. Here we have given RS Aggarwal Class 9 Solutions Chapter 13 Volume and Surface Area Ex 13B.

Other Exercises

Question 1.
Solution:
Radius of the base of a cylinder (r) = 5cm.
and height (h) = 21cm

Question 2.
Solution:
Diameter of the base of the cylinder = 28cm
Radius = $$\frac { 1 }{ 2 }$$ x 28 = 14 cm
Height (h) = 40cm.

Question 3.
Solution:
Radius of cylinder (r) = 10.5cm
Height (h) = 60cm.

Question 4.
Solution:
Diameter of cylinder = 20cm
Radius (r) = $$\frac { 20 }{ 2 }$$ = 10cm

Question 5.
Solution:
Curved surface area of cylinder = 4400 cm²
Circumference of its base = 110 cm

Question 6.
Solution:
The ratio of the radius and height of a cylinder = 2:3
Volume =1617 cm³
and height = 3x.

Question 7.
Solution:
Total surface area of the cylinder = 462 cm²
Curved surface area = $$\frac { 1 }{ 3 }$$ x 462 = 154

Question 8.
Solution:
Total surface area of solid
cylinder = 231 cm²

Question 9.
Solution:
Sum of radius and height = 37m.
and total surface area = 1628 m²

Question 10.
Solution:
Total surface area = 616 cm²
Curved surface area = $$\frac { 616X1 }{ 2 }$$ = 308

Question 11.
Solution:
Volume of gold = 1 cm³
diameter of wire = 0.1 mn

Question 12.
Solution:
Ratio in the radii of two cylinders = 2:3
and ratio in the heights = 5:3
If r1 and r2 and the radii and h1 and h2 are the heights, then

Question 13.
Solution:
Side of square = 12cm
and height = 17.5cm

Question 14.
Solution:
Diameter of cylindrical bucket = 28cm
Radius (r) = $$\frac { 28 }{ 8 }$$ = 14cm
Height (h) = 72cm.

Question 15.
Solution:
Length of pipe (l) = 1m = 100cm
diameter of pipe = 3cm.
Inner radius = $$\frac { 3 }{ 2 }$$ cm

Question 16.
Solution:
Internal diameter of cylindrical tube = 10.4 cm
Radius (r) = $$\frac { 10.4 }{ 2 }$$ = 5.2cm.

Question 17.
Solution:
Length of barrel (h) = 7cm
Diameter = 5mm.

Question 18.
Solution:
Diameter of pencil = 7mm
.’. Radius (R) = $$\frac { 7 }{ 2 }$$ mm = $$\frac { 7 }{ 20 }$$ cm.
and diameter of graphite in it = 1mm

Hope given RS Aggarwal Class 9 Solutions Chapter 13 Volume and Surface Area Ex 13B are helpful to complete your math homework.

If you have any doubts, please comment below. Learn Insta try to provide online math tutoring for you.

Online Education for RS Aggarwal Class 9 Solutions Chapter 1 Real Numbers Ex 1A

These Solutions are part of RS Aggarwal Solutions Class 9. Here we have given RS Aggarwal Solutions Class 9 Chapter 1 Real Numbers Ex 1A.

Other Exercises

Question 1.
Solution:
A number in the form of $$\frac { p }{ q }$$ where p and q are integers and q ≠ 0, is called a rational number

are all rational numbers.

Question 2.
Solution:
The given rational number are represented on a number line on given below :

Question 3.
Solution:
We know that, if a and b are two rational numbers, then a rational number between a and b will be

Question 4.
Solution:
Here, n = 3, x = $$\frac { 1 }{ 5 }$$, y = $$\frac { 1 }{ 4 }$$

Question 5.
Solution:
Here, n=5, x = $$\frac { 2 }{ 5 }$$, y = $$\frac { 3 }{ 4 }$$

Question 6.
Solution:
Here, n = 6, x = 3, y = 4

Question 7.
Solution:
Here, n = 16, x = 2.1, y = 2.2

Hope given RS Aggarwal Solutions Class 9 Chapter 1 Real Numbers Ex 1A are helpful to complete your math homework.

If you have any doubts, please comment below. Learn Insta try to provide online math tutoring for you.

Online Education for RS Aggarwal Class 9 Solutions Chapter 13 Volume and Surface Area Ex 13A

These Solutions are part of RS Aggarwal Solutions Class 9. Here we have given RS Aggarwal Class 9 Solutions Chapter 13 Volume and Surface Area Ex 13A.

Other Exercises

Question 1.
Solution:
(i) Length of cuboid (l) = 12cm
and height (h) = 4.5cm

Question 2.
Solution:
Length of closed rectangular cistern (l) = 8m
and depth (b) = 2.5m.
(i) .’. Volume of cistern = l.b.h.
= 8 x 6 x 2.5 m³ = 120m³
(ii) Total surface area = 2(lb + bh + hl)
= 2(8 x 6 + 6 x 2.5 + 2.5 x 8) cm²
= 2(48 + 15 + 20)
= 2 x 83 m²
= 166 m² Ans.

Question 3.
Solution:
Length of room (l) = 9m
and height (h) = 6.5m

Question 4.
Solution:
Length of pit (l) = 20m

Question 5.
Solution:
Length of wall (l) = 8m.
Width (b) = 22.5 cm = $$\frac { 225 }{ 10X100 } =\frac { 9 }{ 40 } m$$
and height (h) = 6m.
Volume of wall = l.b.h.

Question 6.
Solution:
Length of wall (l) = 15m.
Width (b) = 30cm = $$\frac { 30 }{ 100 } =\frac { 3 }{ 10 } m$$
Height (h) = 4m

Question 7.
Solution:
Outer length of opened cistern = 1.35m = 135 cm
Breadth = 1.08 m = 108 cm
Depth = 90cm
Thickness of iron = 2.5cm.

Question 8.
Solution:
Depth of river = 2m
width = 45m.
Length of current in 60 minutes = 3km

Question 9.
Solution:
Total cost of box = Rs. 1620
Rate per sq. m = Rs. 30

Question 10.
Solution:
Length of room (l) = 10m
Height (h) = 5m

Question 11.
Solution:
Length of hall (l) = 20m
and height (h) = 4.5m.
Volume of the air inside the hall

Question 12.
Solution:
Length of class room (l) = 10m
Width (b) = 6.4 m
Height (h) = 5m.

Question 13.
Solution:
Volume of cuboid = 1536 m³
Length (l) = 16m
Ratio in breadth and height = 3:2
their height (h) = 2x

Question 14.
Solution:
Length of cuboid (l) = 14 cm
Breadth (b) = 11 cm .
Let height (h) =x cm
Surface area = 2(lb + bh + hl)

Question 15.
Solution:
(a) Edge of cube (a) = 9m .
(i) volume = a³ = (9)³ m³ = 729 m³
(ii) Lateral surface area = 4a²

Question 16.
Solution:
Total surface area of a cube = 1176 cm²
Let each edge he ‘a’
then 6a² =1176

Question 17.
Solution:
Lateral surface area of a cube = 900 cm²
Let ‘a’ be the edge of the cube

Question 18.
Solution:
Volume of a cube = 512 cm³
Let ‘a’ be its edge, then

Question 19.
Solution:
Edge of first-cube = 3 cm.
Volume = (3)³ = 27 cm³

Question 20.
Solution:
Area of ground = 2 hectares
= 2 x 10000 = 20000 m²
Height of rain falls 5cm = $$\frac { 5 }{ 100 }$$m
∴ Volume of rain water = 20000 x $$\frac { 5 }{ 100 }$$ m³
= 1000 m³ Ans.

Hope given RS Aggarwal Class 9 Solutions Chapter 13 Volume and Surface Area Ex 13A are helpful to complete your math homework.

If you have any doubts, please comment below. Learn Insta try to provide online math tutoring for you.