What is the surface area of the figure below in square meters?

40 m²

Step-by-step explanation:

square area = 4x4 = 16 m²

4 triangles area = 4x3x0.5x4 = 24 m²

16 + 24 = 40 m²

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!

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).