Question

The area of a square field is 200 sq m. Find the length of its side, correct to 1 decimal place.​

Answer 1

Step-by-step explanation:

=200m²÷4m

=50m

=50m÷10

=5m

Answer 2

Answer:

Given:-

The area of a square field is 200m². Find the length of its side, correct to 1 decimal place.

To Find:-

Length of a square field.

Note:-

●》Area of a square field = ( S )² ( S is side ).

●》Sometimes we need to rearrange a term from its side to do calculations; Here square ( ² ) is important when it is rearrange it becomes under root ( √ ).

●》When "m²" comes in under root, it becomes "m".

Solution:-

Area of a square field = 200m² , it length = ?

☆ According to note first point~

▪︎$Area \ \ of \ \ square \ \ field = ( S )²$

▪︎$200m² = ( S )²$

☆ According to note second point ( rearrangement )~

▪︎$√200m² = S$

☆ After doing calculations in 1 decimal place and accordingly to note third point ( √m² = m )~

▪︎$14.1 m = S$

Checking:-

Let's check for side that L.H.S = R.H.S or not ?

♤ Here, we have find the answer in approximate value so the multiplication will also be in approximate value~

• $Area \ \ of \ \ square \ \ field = S² \ \ ?$

• $200m² = (14.1m)² \ \ ?$

• $200m² = 198.81m² \ \ ?$

♤ Yes! If we approximate the R.H.S then it is equal to L.H.S as it is for 1 decimal if it is for 3 decimal places then it would be exact equal to L.H.S

Hence, proved that Side = 14.1m

Answer:-

Hence, the area of square field's side is = 14.1m ( by approximation )

:)