R S Aggarwal Solutions for Chapter: Mensuration, Exercise 3: EXERCISE 20C

In a parallelogram, it is being given that base $=14 \mathrm{dm}$ and height $=6.5 \mathrm{dm}$. If its area is $k {\mathrm{cm}}^2$, then find the value of $k$.
 

If the area of a rhombus is $k {\mathrm{cm}}^2$, in which each side$=12 \mathrm{cm}$ and height $=7.5 \mathrm{cm}$. Find value of $k$.
 

If the area of a rhombus is $k {\mathrm{cm}}^2$, the lengths of whose diagonals are $16 \mathrm{cm}$ and $28 \mathrm{cm}$. Find the value of $k$.
 

Find the area of a rhombus each side of which measures $20 \mathrm{cm}$ and one of whose diagonals is $24 \mathrm{cm}$.

The area of a rhombus is $148.8 {\mathrm{cm}}^2$. If one of its diagonals is $19.2 \mathrm{cm}$, if the length of the other diagonal is $k \mathrm{cm}$, then find the value of $k$.

The area of a rhombus is $119 {\mathrm{cm}}^2$ and its perimeter is $56 \mathrm{cm}$. If its height is $k \mathrm{cm}$, then find the value of $k$.

The area of a rhombus is $441 {\mathrm{cm}}^2$ and its height is $17.5 \mathrm{cm}$. If the length of each side of the rhombus is $k \mathrm{cm}$, then find the value of $k$.

The area of a rhombus is equal to the area of a triangle having base $24.8 \mathrm{cm}$ and the corresponding height are $16.5 \mathrm{cm}$. If one diagonal of the rhombus is $22 \mathrm{cm}$ and the other diagonal is $k \mathrm{cm}$, then find the value of $k$.