# Area

### Triangle, rectangle,square,trapezoid

## define of area

The amount of cover inside the boundary of a flat (2-dimensional) object such as a triangle,square,trapezoid and ,rectangle.

## how to find area and staar question

## how to find the area of a rectangleExample: What is the area of this rectangle? The formula is: Area = w × h w = width h = height We know w = 5 and h = 3, so: Area = 5 × 3 = 15 square units | ## : What is the area of this triangle?Height = h = 12 Base = b = 20 Area = ½ × b × h = ½ × 20 × 12 = 120 | ## How much does Sam earn cutting this area: staarPart A is a square: Area of A = a2 = 20m × 20m = 400m2 Part B is a triangle. Viewed sideways it has a base of 20m and a height of 14m. Area of B = ½b × h = ½ × 20m × 14m = 140m2 So the total area is: Area = Area of A + Area of B = 400m2 + 140m2 = 540m2 Sam earns $0.10 per square meter Sam earns = $0.10 × 540m2 = $54 |

## how to find the area of a rectangle

Example: What is the area of this rectangle? The formula is: Area = w × h w = width h = height We know w = 5 and h = 3, so: Area = 5 × 3 = 15 square units

## : What is the area of this triangle?

Height = h = 12 Base = b = 20 Area = ½ × b × h = ½ × 20 × 12 = 120

## How much does Sam earn cutting this area: staar

Part A is a square: Area of A = a2 = 20m × 20m = 400m2 Part B is a triangle. Viewed sideways it has a base of 20m and a height of 14m. Area of B = ½b × h = ½ × 20m × 14m = 140m2 So the total area is: Area = Area of A + Area of B = 400m2 + 140m2 = 540m2 Sam earns $0.10 per square meter Sam earns = $0.10 × 540m2 = $54