Question

9. The side of a square is 25 cm. Find the length of its diagonal correct to 2 decimal places.​

Answer 1

Answer:

We know that,

Area of square=[(Diagonal)2]÷2

=(25×25)÷2sq.cm.

=625÷2sq.cm.

=312.5sq.cm.

Then,

We get area of a square is 312.5sq.cm.

Answer 2

Step-by-step explanation:

Given

Square Of side 25 cm

Construction : Join BD

∆ BCD Is a right angle Triangle

Using Pythagoras theorem

BD ^2 = BC ^2 + CD ^2

BD = √ BC^2 + CD ^2

BD = 625 + 625 cm^2

BD = √ 1250 cm^2

BD = 35.35 cm