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Ummm i don’t understand these I just started can someone help

Ummm i don’t understand these I just started can someone help-example-1
User Lvh
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1 Answer

2 votes

so for question 2 find the area of the rectangle first:


15 * 19 = 285

then you find the area of the triangles:


15 * 13 = 195 \\ 195 / 2 = 97.5


15 * 11 = 165 \\ 165 / 2 = 82.5

Add up all the answers:


285 + 97.5 + 82.5 = 465

and for question 3, part A, you just find the area of the 2 boxes and multiply:


5 * 5 = 25 \\ 25 * 2 = 50


2 * 5 = 10 \\ 10 * 4 = 40


40 + 50 = 90

so the surface area of the box is 90 square inches therefore the paint covered 90 square inches. For part B, just add up the length of the thick black lines:


5 + 5 + 5 + 5 + 2 + 5 + 5 + 5 + 5 + 5 + 5 + 2 + 5 + 5 = 64

How these helped have a good day

User Haroun Mohammedi
by
4.9k points