Area of Rectangles and Triangles

Name:

Class:

Date:

Show your work for each problem.

1.
A rectangle has a length of 6 cm and a width of 4 cm. What is its area?
1. a)12 cm²
2. b)20 cm²
3. c)24 cm²
4. d)10 cm²
2.
A triangle has a base of 10 cm and a height of 6 cm. What is its area in cm²?
3.
Which formula is used to calculate the area of a triangle?
1. a)2 × base × height
2. b)base + height
3. c)base × height
4. d)½ × base × height
4.
A rectangular poster is 50 cm long and 30 cm wide. Calculate its area.
5.
A square has sides of 7 m. What is its area in m²?
6.
A triangular garden has a base of 12 m and a height of 8 m. Calculate its area step by step.
7.
A rectangle has an area of 72 cm² and a width of 8 cm. What is its length?
1. a)10 cm
2. b)8 cm
3. c)9 cm
4. d)7 cm
8.
A rectangular floor is 9 m by 6 m. How many 1 m² tiles are needed to cover it?
9.
A right triangle has legs of 5 cm and 12 cm. Find its area.
10.
A triangle has an area of 24 cm² and a base of 8 cm. What is its height?
1. a)3 cm
2. b)6 cm
3. c)4 cm
4. d)8 cm
11.
A rectangular room is 5 m by 4 m. Paint costs 15 euros per can and covers 10 m². How much does it cost to paint the floor?
12.
A house wall consists of a rectangle (8 m × 3 m) with a triangular roof section on top (base 8 m, height 2 m). What is the total area in m²?
13.
An L-shaped room consists of two rectangles: one is 6 m × 4 m, the other is 3 m × 2 m. Find the total floor area.
14.
If you double both the length and width of a rectangle, what happens to its area?
1. a)It doubles
2. b)It quadruples
3. c)It stays the same
4. d)It triples
15.
A rectangular field is 120 m by 80 m. A farmer wants to plant grass at a cost of 2 euros per m². What is the total cost in euros?