Question

The sides of14 squares are 11 cm ,12cm,13cm ,24cm find the total area of 14 squares

Answer 1

Answer:

To find the total area of 14 squares we apply the formula for the sum of n natural  nos. which{n(n+1)(2n+1)/6} it gives the sum of squares.

Now to find the area we find the squares of nos from 1 to 24 and the subtract the sum of squares of nos from 1 to 10.

Step-by-step explanation:

The total area= (24 x 25 x 49)/6 - (10 x 11 x 21)/6                          

=4900-385

= 4515 cm² hope it helps