0
An equilateral triangle has 3 equal interior angles each of 60 degrees. There are two right angled triangles in an equilateral triangle. So we can use trigonometry to find the length of one side of the equilateral triangle then multiply this by 3 to find its perimeter. Hypotenuse (which is one side of the equilateral) = 15/sin 60 degrees = 17.32050808 17.32050808 x 3 = 51.96152423 Perimeter = 51.96152423 units.
Still curious? Ask our experts.
Chat with our AI personalities
Maxine
Judy
FranAdd your answer:
Earn +20 pts
What is the altitude of an equilateral triangle if its perimeter is 15?
the height is 4.33 units cos 30 = .866 15 / 3 = 5 5 x .866 = 4.33
Find the altitude of a triangle whose area is 45cm squared and 15cm?
To find the altitude of a triangle, we can use the formula: area = 0.5 * base * altitude. Given that the area is 45 cm² and the base is 15 cm, we can plug these values into the formula: 45 = 0.5 * 15 * altitude. Solving for altitude, we get altitude = 45 / (0.5 * 15) = 45 / 7.5 = 6 cm. Therefore, the altitude of the triangle is 6 cm.
A triangle has a base of length 20 units and perimeter of 66 units. If a similar triangle has a base of 15 units what is its perimeter?
49.5 units
What is the perimeter and area of a right angle triangle that has a height of 7 cm greater than its base and an hypotenuse of 17 cm?
Perimeter: 8+15+17 = 40 cm Area: 0.5*8*15 = 60 square cm
What is the perimeter of floor 9mm 15mm?
Is it a doll's house? Perimeter = 9+9+15+15 = 48mm
