Question

Please answer this correctly.I want expert people or genius people to answer this

Answer 1

Answer:

298.5 cm^2.

Step-by-step explanation:

The area of the triangular base

= 1/2 * base * height

= 1/2 * 10 * 8.7 cm^2

There are 3 other triangular sides all withe the same area and each of them as area = 1/2 * 10 * 17

So the total surface area of the pyramid

= 1/2 * 10 * 8.7 + 3 * 1/2 * 10 * 17

= 5 * 8.7 + 3 * 85

= 298.5 cm^2.