Question

The area of a rectangle is 96 cm
and its length is 12cm. The
perimeter of the rect angle
is same as the perimeter ok
a triangle find the semi
perimeter of the triangle.​

Answer 1

Answer:

area of rectangle = 96cm

lenght of rectangle = 12cm

By formula, area = l×b

therefore , 96 = 12×b

b = 96/12

b = 8cm

therefore,

perimeter = 2(l+b)

perimeter = 2 (12+8)

perimeter of rectangle = 40 cm

therefore, perimeter of triangle = 40cm [as it is given that the perimeter of rectangle and triangle are equal]

therefore, semi perimeter = 40 / 2

i.e. semi perimeter of triangle = 20 cm

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