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12 votes
29 mm

120 mm
D
What is the perimeter?
millimeters

29 mm 가 120 mm D What is the perimeter? millimeters-example-1
User AndraD
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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
User Robin Manoli
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