Question

Find the lateral area of the come in terms of pi.

Answer 1

The answer should be 12x cm power of 2

Answer 2

Answer:

$15\pi$ sq. cm.

Step-by-step explanation:

The lateral area of a cone is given by the formula  $\pi rl$

Where, r is the radius, and l is the slant height

r is given as 3 cm, but slant height is not given. Let's use the pythagorean theorem on the triangle created by 3cm , 4cm, side and lateral side (slant height).

Let slant height be l:

$3^2+4^2=l^2\\25=l^2\\l=5$

Now plugging into the formula, we get:

Lateral area = $\pi rl = \pi (3)(5)=15\pi$

Second answer choice is right,  $15\pi$ sq. cm