Question

21. If the perimeter of a rectangle is 130 cm and its breadth is 30 cm, then calculate the
EM
area of a rectangle.​

Answer 1

Answer:

$2(l + b) = 130 \\ l + b = 65 \\ l + 30 = 65 \\ l = 35 \\ area = 30 \times 35 = 1050$

Answer 2

Step-by-step explanation:

perimeter=2(l+b)

130cm=2(l+30cm)

130cm/2=l+30cm

65cm=l+30cm

l=60cm-30cm=30cm

area=lb

30cm*30cm=900cm^2