Question

The length of a rectangle is (a - b)cm
and the breadth is (a + b) cm.
If b = (28 - 2a), where a is the square
of 5, find the area of the rectangle.​

Answer 1

Answer:

141 sq cm

Step-by-step explanation:

length = a - b

breadth = a + b

a = square of 5 = 5 × 5 = 25

b = (28 - 2a) = 28 - 2(25) = 28 - 50 = -22

length = a - b = 25 - (-22) = 25 + 22 = 47

breadth = a + b = 25 + (-22) = 25 - 22 = 3

area of rectangle = length × breadth

= 47 cm × 3 cm

= 141 sq cm

hope you get your answer