Answer:
-5/2
Step-by-step explanation:
3c(5+c) -2(3c-7)
15c+3c^2-6c+14
9c+3c^2+14
Assuming that is 2 right triangles sharing a side
height^2 = 20^2 -7^2
height^2 = 400 - 49
height^2 = 351
height =
<span>
<span>
<span>
18.7349939952
</span>
</span>
</span>
x^2 = 24^2 - <span>18.7349939952^2
x^2 = 576 -351
x^2 = 225
x = 15
</span>
<span>1017.88 if you use the formula for the area of a circle which is </span>πr²