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29 mm 가 120 mm D What is the perimeter? millimeters

29 mm 가 120 mm D What is the perimeter? millimeters
asked 191k views
12 votes
29 mm
가
120 mm
D
What is the perimeter?
millimeters

29 mm 가 120 mm D What is the perimeter? millimeters-example-1
asked
User AndraD
by
8.8k points

1 Answer

12 votes
Pythagoras theorem : a^2 + b^2 = c^2

20^2 + b^2 = 29^2

400 + b^2 = 841


841 - 400 = 441

Square root 441 = 21


PERIMETER :

21+29+20 = 70

The answer is 70
answered
User Robin Manoli
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7.6k points
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