Jose Paul Solutions for Chapter: Looking Back, Exercise 1: Exercise

A ladder of length $5 \mathrm{m}$ is kept at a distance of $3 \mathrm{m}$ from the wall to reach a window on the wall. If the height of the window from the ground is $k \mathrm{m}$, then find the value of $k$.

The length and breadth of a room are $3 \mathrm{m}$ and $4 \mathrm{m}$. If the length of the longest metallic rod that can be placed on the floor is $k \mathrm{m}$, then find the value of $k$.

A field is $80 \mathrm{m}$ long and $60 \mathrm{m}$ wide. There is a swimming pool of length $20 \mathrm{m}\times 6 \mathrm{m}$  in this field. If the cost of putting grass in the remaining part of the field at $₹30$ per square metre is $₹R$, find the value of $R$.

A swimming pool has $120$ kilolitres of water. The width of the pool is $4 \mathrm{m}$ and the depth of water is $2 \mathrm{m}$. If the length of the pool is in the form of $k \mathrm{m}$, then find the value of $k$.

If the unknown side is of the following right-angled triangle is $x \mathrm{cm}$, then find the value of $x$.

In the given right-angled triangle, if $x=k \mathrm{cm}$, then find $k$.

A ladder $10 \mathrm{m}$ long is kept on the ground, at $6 \mathrm{m}$ from the vertical wall. It rests on a window. If the height of the wall, where the ladder touches it is in the form of $k \mathrm{m}$, then find the value of $k$.

A rectangular swimming pool $30 \mathrm{m}$ long, $20 \mathrm{m}$ wide and $1.5 \mathrm{m}$ deep is to be tiled. If each tile is $50 \mathrm{cm}$$\times$$50 \mathrm{cm}$, how many tiles will be required?