Find the perimeter of the rectangle whose length is 40cm and a diagona – InterviewSolution

1.

Find the perimeter of the rectangle whose length is 40cm and a diagonal is 41cm. Explain it too.

Answer»

Answer:

98cm

Step-by-step EXPLANATION:

P=2(l+w)

d=w2+l2

Solving forP

P=2l+2d2﹣l2=2·40+2·412﹣402=98cm

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