The area of a rectangle is given by: `A = bh`
where A is the area, b = base length and h is the height.
A rectangle that is 8 units along its base length, and 4 units high, has an area of 32 units square.
Area units are squared: for example, a rectangle of 5 cm x 3 cm has an area of 15 cm2.
What is the area of a rectangle with a base length of 15.5 cm and a height of 4 cm?
| Area | = base x height |
| = 15.5 x 4 | |
| = 62 cm2 |
Remember the answer is in cm2
Answer: 62 cm2
One side of a rectangular building is completely covered in glass. The area of the glass is 550 m2. If the building is 55m long, how tall is the building?
| Area | = base x height | |
| Substitute: | 550 | = 55 x h |
| Divide both sides by 55: | 550 รท 55 | = h |
| 10 | = h |
Answer: 10m