Question

6. Find the length of the rectangle, if the perimeter of the rectangle is same as perimeter of

triangle with sides 23cm, 11cm, 16cm and the length of the rectangle is 1.5 times the

breadth?
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Answer 1

Perimeter of rectangle = perimeter of triangle

Perimeter of triangle = 23+ 11+ 16

= 50 cm

Perimeter of rectangle = 50 cm

2 ( l+b) = 50

2 ( 1.5 x + x) = 50

2.5 x = 50/ 2

2.5 x = 25

x. = 25/ 2.5

x = 10 cm

breath = 10 cm

Length = 1.5 X 10

= 15 cm