Question

find the curved surface area and total surface area of a closed right cylinder whose height is 7 cm and the radius of the base being 3 cm

Answer 1

$<h6>Answer;$

CSA of the right circular cylinder =2×π×r×hsq.units CSA of the right circular cylinder=2×π×r×hsq.units

=2×22/7×7∗15=2∗22/7∗7∗15

=2∗22∗15=2∗22∗15

=660(cm2)=660(cm2)

Total surface Area=2∗π∗r(h+r)cm2Total surface Area=2∗π∗r(h+r)cm2

=2∗22/7∗7(15+7)=2∗22/7∗7(15+7)

=44∗22=44∗22

=968(cm2)


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