If the length of the side of an equilateral triangle is 8cm, what is its area?
- A32
3
sq cm - B16sq cm
- C16
3
sq cm - D32sq cm
Solution & Step-by-step Explanation
The formula for the area of an equilateral triangle with side length a is:
Area=
4
3
a
2
Given the side length a=8cm:
Area=
4
3
×(8)
2
Area=
4
3
×64
Area=16
3
sq cm
Area=
4
3
a
2
Given the side length a=8cm:
Area=
4
3
×(8)
2
Area=
4
3
×64
Area=16
3
sq cm