Question

Calculate the area of a square patch of grass of side 21 cm. ( A ) 452 cm2 ( B ) 354 cm2 ( C ) 256 cm2 ( D ) 441 cm2

Answer 1

Answer:

Opt. D) 441 cm²

Step-by-step explanation:

We know that,

Area of square= Side × Side

Given:

Side : 21 cm

To find: Area of square patch of grass.

Solution:

Area of the square = 21 × 21

= 441 cm²

Thus, area of a square of side 21 m is 441 cm².

Hence, answer, Opt. D) 441 cm²

Answer 2

Answer:

(D) 441 cm².

Step-by-step explanation:

It is stated that,

The length of the side of the square is 21 cm.

From the formula of the area of a square we get that,

Area = (side)²

       = (side × side)

Hence, area of the square_

(21)²

=(21×21)

= 441 cm².

∴ The answer is option (D) 441 cm², as per we get by calculation.

Hence, the area of the grass patch is 441 cm².