Question

the area of curved surface area of a cone is 80 pi cm^2 if the slant height of the cone is 12cm find the radius of base​

Answer 1

कृपया जवाब के लिए ऊपर दिए गए फोटो को देखिए ।

Answer 2

Curved surface area = 80π cm²

Slant height = 12cm

find : Radius

we know that,

πrl = Curved surface area of cone

π × r × 12 = 80π

$r = \frac{80\pi}{12\pi}$

$r = \frac{20}{3}$

Verification:

$\pi \: \times \frac{20}{3} \times 12 = 80\pi$

$\pi \: \times 80 = 80\pi$

LHS = RHS

hence verified

hope it helps

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