R S Aggarwal and Veena Aggarwal Solutions for Exercise 2: Exercise 15B

The perimeter of a rhombus is $60 \mathrm{cm}$. If one of its diagonals is $18 \mathrm{cm}$ long, find the length of the other diagonal.

The perimeter of a rhombus is $60 \mathrm{cm}$. If one of its diagonals is $18 \mathrm{cm}$ long, find the area of the rhombus.

The area of a rhombus is $480 {\mathrm{cm}}^2$ and one of its diagonals measures $48 \mathrm{cm}$. Find the length of the other diagonal.

The area of a rhombus is $480 {\mathrm{cm}}^2$ and one of its diagonals measures $48 \mathrm{cm}$. Find the length of each of its sides.

The area of a rhombus is $480 {\mathrm{cm}}^2$ and one of its diagonals measures $48 \mathrm{cm}$. Find its perimeter.

The parallel sides of a trapezium are $12 \mathrm{cm}$ and $9 \mathrm{cm}$ and the distance between them is $8 \mathrm{cm}$. Find the area of the trapezium.

The shape of the cross section of a canal is a trapezium. If the canal is $10 \mathrm{m}$ wide at the top, $6 \mathrm{m}$ wide at the bottom and the area of its cross section is $640 {\mathrm{m}}^2$, find the depth of the canal.

Find the area of a trapezium whose parallel sides are $11 \mathrm{m}$ and $25 \mathrm{m}$ long, and the nonparallel sides are $15 \mathrm{m}$ and $13 \mathrm{m}$ long.