Jharne De and Ranjana Kumar Solutions for Chapter: Area of Polygons, Exercise 2: EXERCISE 11.1

Find the area of the following trapezium:

The area of the trapezium is $34 {\mathrm{cm}}^2$ and the length of one its parallel sides is $10.4 \mathrm{cm}$. If its altitude is $4 \mathrm{cm}$, then find the length of the other parallel side.

Which of the following is equal to $1 \mathrm{hectare}$?

What is the formula to calculate the length of a diagonal of a rectangle?

If the area of a square is $2.5 {\mathrm{m}}^2$, then which of the following is equivalent to this area?

If the area of a square field is $289 {\mathrm{m}}^2$, then what is the length of its side in kilometers?

Find the number of bricks of size $20 \mathrm{cm}\times 15 \mathrm{cm}$ needed to cover the path of $45 \mathrm{m}\times 20 \mathrm{m}$?

If a rope of length $18 \mathrm{cm}$ is used to make an equilateral triangle, then find the space covered by the triangle.