2 Answers

Qiqi · Answer 1 · 2022-04-08T04:56:06+0000

Answer:

$\huge\boxed{\sf 51\ in.\²}$

Explanation:

Area of square:

= Length * Length

Where length = 3 in.

= 3 * 3

= 9 in.²

Area of Triangle:

= 1/2 (Base)(Height)

Where base = 3 in. , Height = 7 in.

= 1/2(3)(7)

= 1/2 (21)

= 21/2

= 10.5 in.²

Area of 4 triangles:

= 4(Area of triangle)

= 4(10.5)

= 42 in.²

Surface Area of the pyramid:

= Area of square + Area of 4 triangles

= 9 + 42

= 51 in.²

$\rule[225]{225}{2}$

Hope this helped!

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