Question

Courtney wants to carpet part of her bedroom that is shaped like a right triangle with base 4.8 meters and height 5.2 meters. How much carpet will she need?

2. Mrs. Giuntini’s lawn is triangleshaped with a base of 25 feet and a height of 10 feet. What is the area of Mrs. Giuntini’s lawn? Explain how you found your answer. 3. Norma has an A-frame cabin. The back is shown below. How many square feet of paint will she need to cover the back of the cabin?
4. The dough that will be used to make a crescent roll is shown below. What is the area of the dough? Explain how you found your answer.

Answer 1

Area = 1/2*base*height
= 1/2*4.8*5.2
= 2.4*5.2
= 12.48units

Answer 2

1. 12.48 m²

2. 125 ft²

3. 191 1/4 ft²

4. 42 cm²

Explanation:

1. area of right triangle = base*height/2 = 4.8*5.2/2 = 12.48 m²

2. area of triangle = base*height/2 = 25*10/2 = 125 ft²

3. In the figure attached, the shape is shown. It is a triangle with height = 15 ft and base = 25 1/2 ft. Area = (15*25 1/2)/2 = 191 1/4 ft²

4. In the figure attached, the dough is shown. It is a triangle with height = 14 cm and base = 6 cm. Area = 14*6/2 = 42 cm²