Idon’t know what to do and the steps for this

to simplify it, we need to combine like terms. 8 and 15 are like, and 5x and 2x are like. so we rearrange it: 8+15-5x-2x

and now we simplify: 23-7x

First of all we will collect like terms by saying 8+15-5x-2x

Threfore the final answer is 22-7x

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²