Rahul Sofat Solutions for Chapter: Mensuration, Exercise 7: SOME NCERT TEXTBOOK QUESTIONS

A rectangular piece of land measures $0.7 \mathrm{km}$ by $0.5 \mathrm{km}$. Each side is to be fenced with $4$rows of wires. If the length of the wire needed is $k \mathrm{km}$ then, find the value of $k?$

Avneet buys $9$ square paving slabs, each with a side of $\frac{1}{2}$ $\mathrm{m}$. He lays them in the form of a square. The perimeter of his arrangement is $k \mathrm{m}$, find the value of $k$.

Avneet buys $9$square paving slabs, each with a side of $\frac{1}{2}$ $\mathrm{m}$. He lays them in the form of a square. Shari does not like his arrangement. She gets him to lay them out like a cross. If the perimeter of her arrangement is $A \mathrm{m}$, then find the value of $A$.

Avneet buys $9$ square paving slabs, each with a side of $\frac{1}{2}$ $\mathrm{m}$. He lays them in the form of a square. Shari does not like his arrangement. She gets him to lay them out like a cross. Which has greater perimeter?

A room is $4 m$ long and $3 m 50 cm$ wide. How many square metres of carpet is needed to cover the floor of the room?

A floor is $5 \mathrm{m}$ long and $4 \mathrm{m}$ wide. A square carpet of sides $3 \mathrm{m}$ is laid on the floor. If the area of the floor that is not carpeted is $k {\mathrm{m}}^2$, find $k$. 

Five square flower beds each of side $1 m$ are dug on a piece of land $5 m$ long and $4 m$ wide. What is the area of the remaining part of the land?