Question

:56
Review
20
Single Answer Type
The length and breadth of a rectangle a
(3x + 4)cm and 42 – 13 cm
respectively. If the perimeter of the
rectangle is 94 cm, then its area is​

Answer 1

Answer:

1099.1 cm²

Step-by-step explanation:

length = (3x + 4) cm

breadth = 42 - 13 cm = 29 cm

perimeter of rectangle = 2( l + b )

94 = 2 × ( 3x + 4 + 29 )

94/2 = 3x + 73

47 = 3x + 73

3x = 73 - 47

3x = 34

x = 34/3

x = 11.3cm

length = 3 × 11.3 + 4 cm

= 33.9 + 4

= 37.9 cm

Area of rectangle = l × b

= 37.9 × 29

= 1,009.1 cm²