Question

a boy has a cardboardof length12/7 m and breadth 5/4m he want to make 5 pieces from the cardboard by cutting and pasting find the area of 3 such pieces​

Answer 1

Answer:

$\small \bold \red{The \: area \: of \: the \: 3 \: pieces \: is \: \frac{15}{14} }$

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 :

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

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

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.

$\small \bold \red{So \: we \: want \: \frac{3}{5} \: of \: the \: total \: area. }$

The area of the 3 pieces is

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

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

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

Answer 2

Answer:

12

Step-by-step explanation:

the boy has a cardboard pease of length of of length

5/4 *5 *3

= 12

so it is 12 cm long cardboard