2 Answers

SS Hegde · Answer 1 · 2020-07-17T14:27:57+0000

Answer:

C. 864 units²

Explanation:

We have the square in the base and four triangles on the lateral surface.

The formula of an area of a square:

$A_(\square)=a^2$

a - side lenght

We have a = 16. Substitute:

$A_(\square)=16^2=256$

The formula of an area of a triangle:

$A_(\triangle)=(bh)/(2)$

b - base

h - height

We have b = 16 and h = 19. Substitute:

$A_(\triangle)=((16)(19))/(2)=152$

The Surface Area:

$S.A.=A_(\square)+4_(\triangle)$

Substitute:

S.A.=256+4(152)=256+608=864