From a cylinder of radius 7 cm and height 14cm same size of a cone is hollowed out.
Find the surface area of the remaining solid.
Answers
Answer:
4312/3 or 1437.33 cm²
Step-by-step explanation:
radius of cone = radius of cylinder = 7 cm
height of cone = height of cylinder = 14 cm
Remaining surface area = Surface area of cylinder - Surface area of cone
= πr²h - 1/3πr²h
= πr²h ( 1- 1/3 )
[since all the values are same, we have taken them as common]
= 22/7 * 7 * 7 * 14 (2/3)
= 22 * 7 * 14 * 2/34312/3 or 1437.33 cm²
= 154 * 14 * 2/3
= 2156 * 2/3
= 4312/3 or 1437.33 cm²