What is the formula for finding the area of a parallelogram of base b and height h?

$ABCD$ is a parallelogram where $AB=8 \mathrm{cm}, AD=4 \mathrm{cm}$ and $\angle B=120°$. What is the area of $ABCD$?

The area of the above parallelogram is _____$ {m}^{2}$.

Maya has bought a wooden board in the shape of a parallelogram. It has a base of 15 cm and height between the parallel sides as 6 cm. She wants to cover the entire top surface of the board with satin cloth. What is the area of cloth required?

The area of the above parallelogram is _____$ f{t}^{2}$.

Sudha has a puzzle that is in the shape of a parallelogram. Its length is 35 cm and its perpendicular height is 20 cm. What is the area occupied by the puzzle?

If the area of the above parallelogram is 135 $ c{m}^{2}$, its altitude is _____cm.

Do the parallelogram and rectangle shown in the figure below have the same area?

If the area of parallelogram ABCD is 117 $ c{m}^{2}$, what is the length of the base of the parallelogram?

What happens to the area of a parallelogram, if the base is doubled and the height is halved?

If $\mathrm{AB}=35 \mathrm{cm}, \mathrm{AD}=20 \mathrm{cm}$ and area of the parallelogram is $560 {\mathrm{cm}}^2$, find $\mathrm{LB}$.