the diameter of a closed cylinder is 21 cm and height is 10 CM find the total surface area of th
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Answer:
T.S.A=2πr(r+h)
r=21/2;
h=10cm;
T.S.A=2×22/7×21/2(41/2)
T.S.A=66×41/2=1353cm²
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Answered by
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Answer:
total surface area = 2πr (r+h)
diameter = 21/2
Step-by-step explanation:
= 2 × 22/7 × 21/2 ( 21/2 + 10 )
= 2 × 22/7 × 21/2 ×41/2
= 11× 3 × 41
=1353
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