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Question

Length of diagonals of a rhombus ABCD are 16cm and 12cm. Find the side and perimeter of the rhombus.

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Solution

Let p and q be the diagonals and a be the side of rhombus,
p=16 cm,q=12 cm

As we know in a rhombus, each side is of same length and side can be calculated as below when lengths of diagonal are given-
a=p2+q22

a=162+1222

a=256+1442

a=4002

a=202

a=10 cm

Perimeter of rhombus =4a=4×10=40 cm

Hence, the perimeter of rhombus ABCD is 40 cm.

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