Question

if the side of a chess board is smaller than its perimeter by 42 cm, then find the area of the chess board
(a) 100cm²
(b) 144cm²
(c) 196cm²
(d) 180cm²​

Answer 1

Answer:

(c) 196cm²

Firstly, we need to find the square roots of all the numbers

a = 10cm

b = 12cm

c = 14cm

d = Nothing

So now, we need the Perimeters of these squares

Perimeter of Square A

10cm × 4 = 40cm

Perimeter of Square B

12cm × 4 = 48cm

Perimeter of Square C

14cm × 4 = 56cm

Now, subtract the respective number from the perimeter

i.e Perimeter - Side = 42cm

A - 40 - 10 = 30cm

B - 48 - 12 = 36cm

C - 56 - 14 = 42cm

So, The ANSWER is C