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Olenka [21]
2 years ago
14

Melanies blue notebook cover is 20 centimeters by 30 centimeters. She has a sticker for each letter in her name. Each sticker is

a square that measures 2
centimeters on each side. if she puts all 7 stickers on her notebook, how much of the blue notebook cover will still be showing?
Mathematics
1 answer:
Alexxandr [17]2 years ago
7 0
First find the area of the blue notebook by using the formula A=bh
A= 20×30 = 600 cm squared

Now find the area of the stickers using the same formula.
A=bh
A= 2 × 2 = 4 cm squared

Since there are 7 stickers then 4×7 = 28 cm squared is the area of all of them added together. Now simply subtract the area of the stickers from the area of the notebook to find how much of the notebook is still showing.

600 - 28 = 572 cm squared
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