The perimeter of an equilateral triangle is 18 cm, the height is 3.6 cm, and its area is______ Square centimeter

The perimeter of an equilateral triangle is 18 cm, the height is 3.6 cm, and its area is______ Square centimeter

18 △ 3 = 6 (CM) 6 × 3.6 △ 2 = 21.6 △ 2 = 10.8 (square cm). Answer: its area is 10.8 square cm. So the answer is: 10.8

An equilateral triangle has a circumference of 15 cm and a height of about 4 cm. How many square centimeters is the area of this triangle?

1. Side length 15 / 3 = 5
2. Area 4 × 5 / 2 = 10

An equilateral triangle has a circumference of 15 cm and a height of 4.4 cm. What is the area of the triangle?

15÷3×4.4÷2
= 5×2.2
=11 square centimeters

The perimeter of an equilateral triangle is 18 cm, its height is 5.4 cm, and its area is () square cm

The perimeter of an equilateral triangle is 18 cm, its height is 5.4 cm, and its area is (16.2) square cm
Side length = 18 / 3 = 6cm
Area = 6 * 5.4/2 = 16.2 square centimeter