Question

Pls help with this homework pls

Answer 1

Answer: 480 in²

Explanation:

To calculate the surface area, we will find the area of each side and add it together.

Area of the rectangular sides can be found with A = LW:

A = LW

A = (12 in)(10 in)

A = 120 in²

A = LW

A = (12 in)(10 in)

A = 120 in²

A = LW

A = (12 in)(12 in)

A = 144 in²

All the rectangular sides added together:

120 in² + 120 in² + 144 in² = 384 in²

Now, we will find the triangle sides. The formula for a triangle is
`A=(BH)/(2)`, but since we have two congruent triangles I will not be dividing by 2.

A = BH

A = (12 in)(8 in)

A = 96 in²

Lastly, I will add them both together:

384 in² + 96 in² = 480 in²