The lateral area of a cone is 400 pi cm^2. the radius is 10 cm. find the slant height to the nearest tenth.

ANSWER

The slant height is 40cm.

EXPLANATION

The lateral area of a cone is given by:

where r=10cm is the radius of the circle and l is the slant height.

It was also given that, the lateral area is 400π cm²

We substitute the values to get,

We now divide both sides by 10π.

This implies that,

Hence the slant height is 40cm.

6 and 24

step-by-step explanation:

6 x 4 = 24