Area of Triangles and Rhombuses

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

8√3 square feet

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

12

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

12 in

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

12.5√3 square inches

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

18

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

54

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

6

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

20

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

25√3 sq. ft.

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

30

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

4 4/5

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

4 in

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

9