Area of Triangles

Aaron was plotting the shape of his flower garden. While it was an irregular shape, it was perfect for his yard.

What is the area of his flower garden ? (All measurements are in feet.

Alejandra's mom is moving her company to a new office space. Her old office space was 302 square meters (m²).

How much bigger is the office space of her new office (shown) than her old office space?

Given:

the base = 30 and the height = 21

Find:

area of the triangle

Area_Δ = 1/2 * b * h

Area_Δ = 1/2 * 30 * 21 = 315 m²

1) Identify what has been given and what you are looking to find.

Given: b = 30 km and h = 20 km

2) Write down the formula.

A_Δ = 1/2 x b x h

3) Solve (using calculator if needed)

A_Δ = 1/2 x 30km x 20km = 300 km²

1) Identify what has been given and what you are looking to find.

Given: b = _____ and h = _____

2) Write down the formula.

A_Δ =

3) Solve (using calculator if needed)

A_Δ =

1) Identify what has been given and what you are looking to find.

Given: b = _____ and h = _____

2) Write down the formula.

A_Δ =

3) Solve (using calculator if needed)

A_Δ =

Find the area of triangle A

A_Δ =

Find the area of triangle B

A_Δ =

Answers in the CHAT ! ! !

Find the area of triangle A

A_Δ = 1/2 x b x h = 1/2 x 6 x 7 = 21 cm²

Find the area of triangle B

A_Δ = 1/2 x b x h = 1/2 x 4 x 7 = 14 cm²