Question

the length of a rectangle is 21 CM its perimeter is 189 cm find the breadth of rectangle​

Answer 1

Answer:

189=2(l+b)

189/2=l+b

94.5=21+b

94.5-21=b

73.5=b

b=73.5cm

Step-by-step explanation:

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Answer 2

Answer:

breadth is 73.5

Step-by-step explanation:

let its breadth be x

perimeter of rectangle = 2(l+b)

189 = 2(21+x)

189 = 42 + 2x

189 - 42 = 2x

147 = 2x

X = 147/2 = 73.5

therefore, breadth is 73.5

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