Area of triangles and rhombuses//Geometry B

In a triangle the base is 4 inches and the height is 6 inches. Find the area.

12 in.²

The legs of a right triangle measure 4 and 6 inches. The area of the triangle is

12 in.²

The perimeter of an equilateral triangle with a side of 6 inches is

18 in.

Find the area of a rhombus with diagonals 9 ft. and 12 ft.

54 ft²

In this lesson, you will learn more about the properties and characteristics of triangles and .

rhombii

The legs of a right triangle measure 5√2 cm and 4√2 cm. Find the area.

20 sq. cm

Julius plans to fence in a small water hole. The fence will form a triangle as shown in the diagram. What is the total length of fence Julius needs to enclose the water hole?

235 feet

If the perimeter of an equilateral triangle is 30 ft, what is the area?

25√3 sq. ft.

The lengths of the sides of a right triangle are a and b, and the hypotenuse is c. Find the area of the triangle. a = 2√3ft.; c= 4ft A = sq. ft.

2√3

The area of a right triangle with one leg measuring 5 ft. and hypotenuse measuring 13 ft. is

30 ft.²

Find the height of a triangle whose base is 5 inches and area is 12 square inches.

4 4/5 in.

The area of a triangle is 10 square inches and its height is 5 inches. Find the base.

4in

The perimeter of an equilateral triangle is 12 feet. Find the area of the triangle.

4√3 square feet

The length of a side in an equilateral triangle is 5 inches. Find the area of the triangle.

6.25√3square inches

If the area of an equilateral triangle is 9√3 sq ft, how long is a side?

6ft.

Find the area of a triangle whose base is 2√3 in. and height is 3√3 in.

9 in.²

The lengths of the sides of a right triangle are a and b, and the hypotenuse is c. Find the area of the triangle. b = 2 in.; c = 6 in. A = sq. in.

9√2 sq. in