▱Areas of shapes: math practice, grade 8

Practise “Areas of shapes” online for free. Five right answers in a row make the tasks harder, two mistakes in a row make them easier. Right answers earn coins for games.

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Example problems

These are only examples: the practice makes new tasks every time.

1. A triangle’s base is 28 cm and its height 2 cm. Find its area.

   S = ? cm²

   Answer

   28

2. A parallelogram’s side is 14 cm and the height to it 2 cm. Find its area.

   S = ? cm²

   Answer

   28

3. A trapezoid’s bases are 11 cm and 17 cm, its height 10 cm. Find its area.

   S = ? cm²

   Answer

   140

4. A trapezoid’s bases are 12 cm and 16 cm, its height 4 cm. Find its area.

   S = ? cm²

   Answer

   56

5. A rhombus has diagonals of 14 cm and 12 cm. Find its area.

   S = ? cm²

   Answer

   84

6. The legs of a right triangle are 22 cm and 10 cm. Find its area.

   S = ? cm²

   Answer

   110

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