the curved surface area of a right circular of height 21 cm is 957 cm 2. find the diameter of the base of the cylinder (in cm )
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RishabhBansal:
can you pls explain how 7.25*2 is 15
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Hello Bro,
Here is your Answer ⤵️
Given, for right circular cylinder
h = 21cm
CSA = 957 cm²
d = ?
=> we know CSA = 2πrh
Thus 2*22/7*r*21 = 957 cm²
=>2*22*3*r = 957
=> r = 957/44*3
=> r = 957/132
=> r = 7.25 cm
=> d = 2r
=> d = 2(7.25)
=> d = 14.5 cm
Here is your answer
Hope it helps
Here is your Answer ⤵️
Given, for right circular cylinder
h = 21cm
CSA = 957 cm²
d = ?
=> we know CSA = 2πrh
Thus 2*22/7*r*21 = 957 cm²
=>2*22*3*r = 957
=> r = 957/44*3
=> r = 957/132
=> r = 7.25 cm
=> d = 2r
=> d = 2(7.25)
=> d = 14.5 cm
Here is your answer
Hope it helps
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