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Please help, super easy 7th grade math! worth a lot of points

Please help, super easy 7th grade math! worth a lot of points-example-1
User Mblinn
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2 Answers

8 votes
You must take the total perimeter and subtract what you know to find the missing side. So 152-30-20-35= 57
User Simon Su
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7 votes

Answer:

57mm

Explanation:

Length of missing side= perimeter- known lengths

= 152mm- (30+20+45)mm

= (152 - 95)mm

= 57mm

User MRX
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