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topjm [15]
3 years ago
14

If you are framing a photo that is 4in by 7 in, and you want the frame to be the same width all around, and the total area of th

e frame and the photo is 130in squared, what is the width of the photo?
Mathematics
1 answer:
aliina [53]3 years ago
4 0

Answer:

<em>3.36in</em>

Step-by-step explanation:

The total surface area of the cardboard is expressed as;

TSA = 2(LW + LH + WH)

L is the length = 4in

W is the width

H is the height = 7in

TSA = 130in²

Substitute the given values into the formula and get the width W

TSA = 2(LW + LH + WH)

130 = 2(4W+4(7) + 7W)

130 = 2(11W+28)

130 = 22W+56

22W = 130 - 56

22S = 74

W = 74/22

<em>W = 3.36in</em>

<em>hence the width of the photo is 3.36in</em>

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