Question

the diameter of the base of a right circular cylinder is 28 decimeter and height is 15 M find the CSA and TSA of it.

Answer 1

circumference = 2πr = 88 (given)
so, 2× π × r = 88
π×r = 88 / 2
22/7 × r = 44
r= (44×7) / 22
r= 2×7
r= 14cm
Volume= πr²h
=(22/7) × 14×14 × 60 (h=60)
=44×14×60
=36960 cm³
C.S.A. = 2πrh
= 2× [22/7] ×14 × 60
=88×60 (2πr = 88 [given])
=5280 cm²