Question

A cylinder has radius 7cm and height 14cm. Find its lateral surface area and total surface area ​

Answer 1

Answer:

radius = 7cm

height = 14 cm

lateral surface area = 2πrl = 2× 3.14 × 14

= 87.92 cm^2 approx

total surface area = 2πr(h+r) = 2× 3.14(14+7) = 131.88 cm^2 approx

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Answer 2

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LSA= 2πrh

= 2×22/7×7×14

=616 centimeter square

TSA=2πr(h+r)

=2×22/7×7×7+14

=921 centimetre square