Answer:
<h2>S.A. = 297 mm²</h2>
Step-by-step explanation:
We have a square in the base and four triangles on the lateral surface.
The formula of an area of a square:
s - side
We have s = 9mm. Susbtitute:
The formula of an area of a triangle:
b - base
h - height
We have b = 9 mm and h = 12 mm. Substitute:
The Surface Area:
Substitute:
1,000,000+900,000+80,000+3,000+600+
40+6
Answer:
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