2006-06-18 16:19:23 · 7 answers · asked by Anonymous in Education & Reference ➔ Homework Help
A = (1/2)bh
You already know that base = 4, but you do not know the height.
Use trig to find the length of the height.
Draw the triangle. Cut the triangle in half. The line that you draw will be the height.
All angles are 60 degrees.
Let h = height, then
tan(60) = h/2
Thus, h = 2tan(60)
h = 2sqrt(3)
Area = (1/2)bh
A = (1/2)(4)(2sqrt(3))
Answer: 4sqrt(3)
2006-06-18 18:10:25 · answer #1 · answered by MsMath 7 · 8⤊ 2⤋
The formula for solving the area of an equilateral triangle is:
area= (1/4) (s squared) (square root of 3)
with s=4cm
area=(1/4) (4x4) (sq rt 3)
I couldn't find the square root button on my calculator, so I can't give you the exact answer, but I hope that helps!
2006-06-19 01:16:50 · answer #2 · answered by blueeyedcarrottop 2 · 0⤊ 0⤋
4 times 4 divided by 2 gives the area of this triangle.
2006-06-18 23:24:21 · answer #3 · answered by quietwalker 5 · 0⤊ 0⤋
8 cm^2 (eight centimeter's squared) The formula for finding a triangle's area is bh/2 or base times height divided by 2.
2006-06-18 23:24:30 · answer #4 · answered by popinrockinm 2 · 0⤊ 0⤋
8cm^2
2006-06-18 23:21:38 · answer #5 · answered by cyanne2ak 7 · 0⤊ 0⤋
8cm squared
2006-06-19 02:14:20 · answer #6 · answered by hotpinkchik 2 · 0⤊ 0⤋
eight centimeters squared.
2006-06-18 23:27:18 · answer #7 · answered by fastfrip 1 · 0⤊ 0⤋