The perimeter of an equilateral triangle is 15 cm and its height is 4 cm. What's its area () square cm

The perimeter of an equilateral triangle is 15 cm and its height is 4 cm. What's its area () square cm

The perimeter of an equilateral triangle is 15 cm and its height is 4 cm. What is its area (10) square cm
15 △ 3 × 4 △ 2 = 10 square centimeter

An equilateral triangle has a circumference of 15 cm and a height of 3 cm. How many square centimeters is its area

15 △ 3 = 5 (CM) this is the side length of the triangle
5 × 3 △ 2 = 7.5 (CM & # 178;) according to the triangle area formula
A: the area is 7.5 square centimeters

An equilateral triangle has a circumference of 28.5 cm, a height of 6.4 cm, and an area of 10 cm______ Square centimeter

2, = 9.5 × 6.4 △ 2, = 30.4 (square centimeter); answer: the area is 30.4 square centimeter, so the answer is: 30.4

An equilateral triangle has a circumference of 18 cm and a height of 5.2 cm. Its area is______ Square centimeter

18 △ 3 = 6 (CM), 6 × 5.2 △ 2 = 31.2 △ 2 = 15.6 (square cm). A: its area is 15.6 square cm. So the answer is: 15.6