Question

a boy has a cardboard of length 10/7m and breadth 5/4m . he wants to take 5 pieces from the cardboard by cutting and pasting . find the area of 3 such pieces.

Answer 1

Area of cardboard before cutting:
10/7 × 5/4 = 1.79m²

Area of each cardboard piece:
1.79 ÷ 5 = 0.358m²

Area of 3 pieces:
0.358 × 3 = 1.074m²

Answer 2

Answer:

The area of the 3 pieces is $\frac{15}{14}$        

Step-by-step explanation:

Given : A boy has a cardboard of length 10/7 m and breadth 5/4 m. He wants to take 5 pieces from the cardboard by cutting and pasting.

To find : The area of 3 such pieces?

Solution :

Length = $\frac{10}{7}$

Breadth = $\frac{5}{4}$

The area of the cardboard is

$A=l\times b$

$A=\frac{10}{7}\times \frac{5}{4}$

$A=\frac{25}{14}m^2$

We want it divide into 5 pieces and then we want 3 of those pieces.

So we want $\frac{3}{5}$ of the total area.  

The area of the 3 pieces is

$A=\frac{25}{14}\times\frac{3}{5}$

$A=\frac{15}{14}$

Therefore, The area of the 3 pieces is $\frac{15}{14}$