Question

The volume of cylinder is 448pie cm^3 and the height is7cm find csa and tsa

Answer 1

$\sf\textsf{Volume=448 pie cm cube}$

$\sf\textsf{Height=7 cm}$

ATQ:-

=>πr²h=448π

=>$\cancel{π}$r²×7=448×$\cancel{π}$

=>7r²=448

=>r²=448/7

=>r²=64

=>r=√64

=>r=8

$\sf\textsf{So, the radius=8 cm.}$

Now, CSA=2πrh

=2×22/7×8×7

=352 cm²

So, CSA=352 cm²

Now, TSA=2πr(r+h)

=2×22/7×8(8+7)

=352/7×15

=5280/7 cm ²

=754.285 cm²

So, the TSA=754.285 cm²