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likoan [24]
4 years ago
12

Monroe is gift wrapping a box that has the shape of a right rectangle or prism the box has a length of 20 cm a width of 7 cm and

a height of 15 cm how many square is centimeters giftwrap will Monroe need to cover the entire outside of the box
Mathematics
1 answer:
Zepler [3.9K]4 years ago
7 0
All faces are rectangles.
Each two opposite faces are congruent and have the same area.

Two faces measure 20 cm by 7 cm.
Two faces measure 20 cm by 15 cm.
Two faces measure 15 cm by 7 cm.

total surface area = 2 * 20 cm * 7 cm + 2 * 20 cm * 15 cm + 2 * 15 cm * 7 cm

total surface area = 280 cm^2 + 600 cm^2 + 210 cm^2

total surface area = 1090 cm^2
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