The width of rectangle is 5 cm and its diagonal is 13 cm. What is its perimeter?
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Answer:
Perimeter = 34
Step-by-step explanation:
Diagonal of rectangle = ( l^2 + b^2 )^1/2
By squaring on both sides
169 = l^2 + 25
l^2 = 144
l = 12.
Length = 12.
And perimeter = 2(l + b)
= 2(12+5)
= 2 * 17 = 34.
Therefore perimeter of rectangle = 34
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