Question

the breath of a rectangle having perimeter 70m and 20m is_______


(a)15 (b)14

(c)30 (d)40​

Answer 1

Answer:

perimeter = 70 m

length = 20 m

perimeter of rectangle = 2×(l+b)

➡️ 70 = 2×(20+b)

➡️ 70 = 40 + 2b

➡️ 70 - 40 = 2b

➡️ 2b = 30

➡️ b = 30/2

➡️ b = 15

Therefore breadth = 15 m.

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