Question

Find the radius of base of a cone whose curved surface Area is 1884.4msquare and it's slant height is 12cm

Answer 1

hi dude!!

your answer...

given

•     curved surface area of cone is 1884.4 m² = 188440 cm²

•     slant height is 12cm

C.S.A = πrl

188440 = 3.14×r×12

by moving r towards LHS and others towards RHS.

r = 188440/3.14×12

r = 188440/37.68

r = 5001.0615 cm²

r = 5001 cm² approx.

hope it helps you.....

Answer 2

$\huge \red{\mathfrak{solution}}$

Given :

● Curved surface area of cone is 1884.4 m^2

● Slant height (l) = 12cm= 0.12m

To find :

◆ Radius of cone =

As we know that ,

CSA of cone =

$\green{\boxed{\pi \: r \: l}}$

$\rightarrow \: 1884.4 = 3.14 \times r \times 0.12 \\ \\ \rightarrow \: r = \frac{1884.4}{3.14 \times 0.12} \\ \\ \rightarrow \: r = \frac{1884.4}{0.3768} \\ \\ \rightarrow \: r = 5001.06$

Radius of the cone is

$\boxed{ \pink{\bold{5001.06 \: m}}}$