Question

Calculate the area and the height of an apuilateral triangle whose perimeter is 60cm

Answer 1

Answer:

Step-by-step explanation: equilateral ∆ have same sides

a +a+a=60

3a=60

a=20 (one side)

Area of eqi tri =√3÷4a^a

√3÷4×20×20

√3÷4×400

100√3cm^2

Answer 2

Perimeter = 3a = 60cm

→a = 20cm

Area of an equilateral triangle = √3/4 × a²

= √3×100

= 100√3

1/2×a×h = 100√3

1/2×20×h = 100√3

10h = 100√3

h = 100√3/10

h =10√3