Answer:
x
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
Draw a triangle with shortest side on the ground (horiz.). The length of this side is 80 feet. Two angles touch the ground: a right angle, and the 70 degree angle.
Then the height of the building is the 2nd shortest side.
The tangent function is the appropriate one to use here:
opp h
tan 70 deg = -------- = ----------
adj 80 ft
h
Since tan 70 deg = 2.75, 2.75 = -------
80 ft
so h = building height = (80 ft)(2.75) = 219.8 ft
- 4(20+22)
- 4(40+2)
This expression are equivalent to 4(42)
35
area of triangle is (base X height)/2
so it would be (14 X 5)/2
which is 70/2
which is 35
