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harkovskaia [24]
2 years ago
8

Margo is creating a pencil caddy in the shape of a triangular prism. She is determining how much wood she needs to build the cad

dy. Her design is shown below.
The total amount of wood Margo needs to build her pencil caddy is
square inches.

Mathematics
1 answer:
natka813 [3]2 years ago
4 0

Answer:

a little late

205 1/5 is your answer

Step-by-step explanation:

break down the 3-D figure

Find area of triangle A=1/2bh

=1/2(8 inch)(6   9/10inch)

=1/2(8 inch)(69/10 inch)

=138/5 square inch

then multiply two because you have 2 triangles

=138/5 (2)  

= 276/5 square inch

= 55 1/5 sq.in

Find area of rectangle

A = lw

=6 1/4 in (8 in)

= 25/4 (8 in.)

= 50 sq. in.

then multiply by 3 because of the three rectangles

= 50 sq. inch (3)

= 150 sq. in.

Add all together

55 1/5 sq. inch + 150 sq. inch = 205 1/5 sq. inch

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_____

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Step-by-step explanation:

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