Mensuration Practice Test 7

Question : 23 of 40

Marks: +1, -0

Find the diameter of a sphere whose total surface area is equal to the lateral surface area of the cylinder with both height and diameter equal to 14 cm.

20 cm
13 cm
17 cm
14 cm

Validate

Solution:

Surface area of the cone = Lateral surface area of the cylinder.

4πr^2

= 2 × π × 7 × 14

r^2

{2×7×14}/4

r = 7 cm
Diameter of the sphere = 14 cm

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