NCERT Solutions for Chapter: Mensuration, Exercise 3: EXERCISE 10.3

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

By splitting the given figure into rectangles, find its area (The measures are given in centimetres).

 

By splitting the given figure into a rectangle, find its area (The measures are given in centimetres).

If the area of the figure is $k {\mathrm{cm}}^2$, then find the value of $k$ by splitting the following shape into rectangles and the measures are given in centimeters.

The measures of the sides of the figure are given in centimetres.

If its area is $k {\mathrm{cm}}^2$, then find the value of $k$.

Split the given shape into rectangles and find its area. (The measures are given in centimetres)

How many tiles whose length and breadth are $12 \mathrm{c}\mathrm{m}$ and $5 \mathrm{c}\mathrm{m}$ respectively will be needed to fit in a rectangular region whose length and breadth are respectively: $100 \mathrm{c}\mathrm{m}$ and $144 \mathrm{c}\mathrm{m}$.

How many tiles whose length and breadth are $12 \mathrm{c}\mathrm{m}$ and $5 \mathrm{c}\mathrm{m}$ respectively will be needed to fit in a rectangular region whose length and breadth are respectively: $70 \mathrm{c}\mathrm{m}$ and $36 \mathrm{c}\mathrm{m}$.