Question

If m = 12 in and n = 15 in, what is the surface area of the geometric shape formed by this net?

A.

468 sq in

B.

504 sq in

C.

288 sq in

D.

450 sq in

Answer 1

the answer is B. 504

Answer 2

split the shape up 4 equal triagles 1 square area of triangle=1/2bh area of square=side^2 area of 1 triangle=1/2(m)n area of 1 triangle=1/2(15)12 area=90 times 4 since 4 triangle 90*4=360 area of square side=m=12 area=12^2=144 total area=square+triangles total area=360+144=504 answer is B