find the total surface area and volume of a cone whose height is 28cm
and diameter is 42 cm
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Answer:
TSA = 3696 cm2
Volume = 12936 cm3
Step-by-step explanation:
Given, d = 42cm
r = 21cm
h = 28cm
Slant height =√ L2 + r2
=√21 ^2 + 28^2
= 35
TSA of cone = πr(r+l)
22/7× 21 × 56
= 3697
Volume = 1/3 πr^2h
1/3 × 22/7× 21^2 ×28
1/3 ×22/7 ×441 ×28
= 12936 cm3
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