C.S.A of cone 88 cm^2 and it's slant height is 7 cm. find the T.S.A of cone.
plz answer step by step.
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C.S.A of cone 88 cm^2 and it's slant height is 7 cm. find the T.S.A of cone.
plz answer step by step.
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Answer:
TSA = 138.24 cm^2
Step-by-step explanation:
CSA = pi x r x l
(7 gets cancelled from N and D)
r = 4 cm
TSA = CSA + Area of base
= 88 + pi x r^2
= 88 + 3.14 x (4^2)
= 88 + 3.14 x 16
= 88 + 50.24
TSA = 138.24 cm^2
Answer:
T.S.A. =138.24cm^2
Step-by-step explanation:
C.S.A.=pi×R×l
88=22/7×R×7
(7 gets cancelled from N and D)
88/22=R
R=4cm
T.S.A. =C.S.A. +area of base
=88+pi×R²
=88+3.14×16
=88+50.24
T.S.A.=138.24cm²