The perimeter of the rectangle whose length is 60 cm and a diagonal
is 61 cm is
(a) 120 cm (b) 122 cm (c) 71 cm (d) 142 cm ( with full explanation)
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Answer:
d 142 cm
Step-by-step explanation:
diagonal^2=length^2+breadth^2
61^2=60^2+b^2
121=b^2
b=11
perimeter=2(l+b)
=2(11+60)
=2*71
=142 cm
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