The csa of a cylinder is 154 cm^2. the tsa of a cylinder is 3 times csa. find the volume of cylinder
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1
csa of cyl.=154cm2
tsa of cyl.=154*3=462
pi r l=154
pi r l+2(pi r )2=462
solve it
tsa of cyl.=154*3=462
pi r l=154
pi r l+2(pi r )2=462
solve it
Answered by
4
Answer:
98cm∧3
Step-by-step explanation:
2πrh = 154 cm∧2
2πr∧2 + 2πrh = 462
2πr∧2 + 154 = 462
2πr∧2 = 308
r∧2 = 308 ×7 ÷ 22×2
r = √49
r = 7cm
h = 154×7 ÷ 2×22×7
h = 7÷11
vol = πr∧2h
= 22÷7 × 7 × 7 × 7 ÷11
=98cm∧3
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