Find the perimeter of the rectangle whose length is 40cm and a diagonal is 41cm.
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Answer:
Firstly mark the diagonal on the rectangle u will get two triangles like this above ok
than using pythagoras theorem find breath than perimeter.
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Using the formulas
P=2(l+w)
d=√w²+l²
Solving for P
P=2l+2√d²-l²
=2×40+2•√41²-40²
=2×40+2•√1681-1600
=98
plz make me has brainliests
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