Adaptive Practice
Surface Areas and Volumes
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Question 1 of 10
⏱ 0:30
Easy
The radius of a sphere is 7 cm. What is its surface area? (Use \(\pi = \frac{22}{7}\))
Easy
A cylinder has a radius of 5 cm and height 10 cm. Find its curved surface area.
Easy
The volume of a cube is 27,000 cm³. What is the length of one edge?
Easy
A cone has a radius of 3 cm and height 4 cm. Find its slant height.
Medium
Find the total surface area of a hemisphere of radius 14 cm.
Medium
A metallic sphere of radius 6 cm is melted and recast into smaller spheres each of radius 2 cm. How many smaller spheres will be formed?
Medium
The height of a cone is tripled while keeping the radius same. How does the volume change?
Medium
A right circular cylinder and a right circular cone have equal bases and equal heights. Find the ratio of their volumes.
Hard
The radius of a sphere is increased by 20%. By what percentage does its surface area increase?
Hard
A solid metallic sphere of radius 10 cm is melted and recast into cones each of radius 2 cm and height 3 cm. Find the number of cones formed.