Question

radius and slant height of a cone are 35 cm and 37cm . find its a C.S.A and T.S.A??​

Answer 1

Answer:

C.S.A =4070

T.S.A =7920.

hope it helps.

Answer 2

Given :

• Radius of the cone = 35 cm.
• Slant height of the cone = 37 cm.

To find :

• C.S.A and T.S.A of the cone.

Solution :

• Radius(r) = 35 cm.
• Slant height(l)= 37 cm.

We know,

${\boxed{\bold{C.S.A\:of\:cone=\pi\:r\:l}}}$

$\implies\sf{C.S.A=\frac{22}{7}\times\:35\times\:37\:cm^2}$

$\implies\sf{C.S.A=22\times\:5\times\:37\:cm^2}$

$\implies\sf{C.S.A=4070\:cm^2}$

Therefore, C.S.A of the cone is 4070 cm².

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We know,

${\boxed{\bold{T.S.A\:of\:cone=\pi\:r(r+l)}}}$

$\implies\sf{T.S.A=\frac{22}{7}\times\:35(35+37)\:cm^2}$

$\implies\sf{T.S.A=22\times\:5\times\:72\:cm^2}$

$\implies\sf{T.S.A=7920\:cm^2}$

Therefore, the T.S.A of cone is 7920 cm².

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