Question

The length of a rectangular wall is $10m$. There are two similar square shelves of edges $2m$ fixed on the wall. The area of the wall that was not covered by the shelves is $42m^2$. Calculate the breadth of the wall.

Answer 1

Given that,

Rectangular wall length is $10m$.

Shelves is covered $42m^2$.

We know that,

Area of wall-area of two square shelves $=42m^2$.

$10\times$breath$-2(2\times 2)=42$

$10b-8=42$

$10b=42+8=50$

$b=50/10=5m$

Then,

We get breath is $5m$.