Question

The radius and the slant height of a cone are equal of x cm. The total surface area is _______ cm².(a) 2π x²
(b) π x²
(c) 2π x
(d) π x

Answer 1

Hey there!!

The formula for the total surface area = ( π ) ( radius )² + ( π ) ( radius ) ( slant height )

Radius = ' x '

Slant height = ' x '

( π ) ( x )²+ ( π ) ( x ) ( x )

( π ) ( x )² + ( π ) ( x )²

= 2πx²

______

Option ( a )