What is the altitude of an equilateral triangle whose side is 15cm?
- A15
3
cm - B10
3
cm - C2
9
3
cm - D2
15
3
cm
Solution & Step-by-step Explanation
The formula for the altitude (h) of an equilateral triangle with side length a is given by:
h=
2
3
a
Given side length a=15cm:
h=
2
3
×15=
2
15
3
cm
h=
2
3
a
Given side length a=15cm:
h=
2
3
×15=
2
15
3
cm