What is the surface area of the figure?

a.408 ft²

b.458 ft²

c.545 ft²

d.720 ft²

I think the surface area of the figure is D - 720 ft squared.

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!