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Andrei [34K]
2 years ago
11

jason is wrapping a gift.The box he is using is a rectangular prism with a length of 20 inches a width 12 inches and a height of

5 inches.Find how many square inches of paper does he need to wrap the intire box?​

Mathematics
1 answer:
dedylja [7]2 years ago
4 0

Answer:

Step-by-step explanation:

Surface area of rectangular prism:

length = l = 20 in

width = w = 12 in

height = h = 5 in

\boxed{\text{surface area of rectangular prism = 2*[lw + wh + hl]}}

                                              = 2* [ 20*12 + 12*5 + 5*20]

                                              = 2* [240 + 60 + 100]

                                               = 2 * 400

                                               = 800 in²

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