curved surface area of a right circular cylinder of height 21 cm is 957 CM square find the diameter of base of the cylinder
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Answered by
5
csa of cylinder=2πrh
957=2×22/7×r×21
1/2×957/21×7/22=r
1/2×319/7×7/22=r
0.5×45.57×0.31=r
7.06=r
and diameter - 2r
2×7.06
14.12
please mark it as BRAINLIEST
957=2×22/7×r×21
1/2×957/21×7/22=r
1/2×319/7×7/22=r
0.5×45.57×0.31=r
7.06=r
and diameter - 2r
2×7.06
14.12
please mark it as BRAINLIEST
Answered by
6
Given :-
C.S.A of cylinder = 957cm²
height = 21 cm
C.S.A = 957
=> 2πrh = 957
=> 2×22/7×r×21 = 957
=> 132×r = 957
=> r = 957÷132
=> r = 7.25
radius of the cylinder = 7.25cm
Diameter = 2r = 2×7.25 = 14.5 cm
this is your answer..
C.S.A of cylinder = 957cm²
height = 21 cm
C.S.A = 957
=> 2πrh = 957
=> 2×22/7×r×21 = 957
=> 132×r = 957
=> r = 957÷132
=> r = 7.25
radius of the cylinder = 7.25cm
Diameter = 2r = 2×7.25 = 14.5 cm
this is your answer..
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