Question

Determine the perimeter of the rectangle whose lengur en
(a 4 cm, 3 cm. (b) 12 cm, 9 cm. (c) 9 m, 7 m.
(d) 6 cm, 5 cm.
The perimeter of a rectangle is 30 cm. The breadth of the rectangle is 9 cm. What is its length?​

Answer 1

Step-by-step explanation:

perimeter= 2(l+b)

30= 2(l+9)

30= 2l+18

2l+18=30

2l= 30-18

l=. 12/2

l= 6cm

length= 6cm

Answer 2

Answer:

length = 6 cm

Step-by-step explanation:

perimeter of a rectangle= 30 cm

breadth of a rectangle = 9 cm

let length of a rectangle be X cm.

area of a rectangle = 2 (length + breadth)

30 = 2 ( X + 9)

30 = 2x + 18

2x = 30 - 18

2x = 12

X = 6

therefore, length of a rectangle = 6 cm

Hope it helps...

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