1.
2.
The base of a triangle is 7cm, and its height is 9cm. What is its area?
3.
4.
A square's perimeter is 12cm. What is its area in square centimeters?
5.
If the diagonal of a square is 9 cm long, what is the area of the square, in cm?
6.
One side of a rectangle is 15cm long, while the other is 5cm. What is the area of the rectangle, in cm?
7.
A trapezoid has one 12 cm long base and another 16 cm long base. The altitude is 5 cm long. What is the area of this trapezoid?
8.
A container has internal dimensions of 150 cm by 60 cm by 50 cm. Each oil barrel's dimensions are 100 cm by 50 cm by 20 cm. How many barrels can one pour into the container?
9.
The perimeter of a circle is 8*pi. What is its radius?
10.