Question

the perimeter of rectangle is 230 cm ,if the length of the rectangle is 70 cm, find its breadth and area.​

Answer 1

Step-by-step explanation:

$perimetr = 2(l + b) \\ 230 = 2(70 + b) \\ \\ 230 = 140 + 2b \\ \\ 2b = 90 \\ breadth = 45cm \\ \\ area = l \times b \\ area = 70 \times 45 \\ \\ 3150cm {}^{2}$

Answer 2

breadth = 45cm

area = 3150cm^2

2(l+b) = 230

2(70+b) 230

140 + 2b = 230

2b = 90

b = 45

area = Lb

= 70×45

= 3150 cm^2