Question

if the area of a square is 400mm² find the length is its side ​

Answer 1

Step-by-step explanation:

area of square =(side) ²

400=(side)²

(20)²=(side) ²

20=side

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Answer 2

Given:-

• Area of a square is 400mm²

To Find:-

• Find the length of its side.

Concept:-

• Let's go through the concept first. Concept used here is Area of a square.Substitute the values in the equation and solve it.Let's do it.

Formulae Applied:-

• Area of a Square = Side × Side

Solution:-

Let the side be s

Given that,

Area of a square is 400mm²

According to the question we have,

Area of a Square = Side × Side

= Side × Side

= Side × Side = 400mm²

= s × s = 400mm²

= s² = 400

= s = √400

= s = 20

= s = 20mm

Hence,

The side of the square is 20mm.

Verification:-

s × s = 400mm²

s = 20mm

Substitute the value of s in the equation above

= s × s = 400mm²

= 20 × 20 = 400

= 400 = 400

= LHS = RHS

Hence,

It is verified.