Question

what is the surface area of a closed cylinder whose base area is 154 centimeters squared and the height is 200 centimeters

Answer 1

Answer:

8954cm^2

Step by step explanation:

Given that

154cm=base and top area

so,r^2=7×154/22 (derived from pie×r^2)

r^2=1078/22

r= square root of 49

therefore,r=7

then,lateral surface area of cylinder

$2\pi \times r \times h$

$2 \times 22 \div 7 \times 7 \times 200$

$2 \times 22 \times 200$

$44 \times 200$

$8800$

therefore,total surface area is

8800+154

=8954

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