Answer:
in
Step-by-step explanation:
The formula to find the area of a circle:
, where
is the radius.
The formula to find the circumference (perimeter) of a circle:
, where
is the radius.
1) To find the circumference of the circle, we need to find the radius (
) first. Since the area of the circle is given to us, we need to equate this to the formula to find the area of a circle.
Cancel the
by bringing it to the other side.
÷ 

2) Find the circumference of the circle by using the formula,
.
= 
=
in
Answer:
The length of the hypotenuse is 2.4m
Step-by-step explanation:
well to start we have to know the relationship between angles, legs and the hypotenuse
α = 55°
o: opposite = 2.0m
h: hypotenuse
sin α = o/h
cos α= a/h
tan α = o/a
we see that it has (angle, hypotenuse, opposite)
we look at which meets those data between the sine, cosine and tangent
is the sine
sin α = o/ah
Now we replace the values and solve
sin 55 = 2.0/h
0.81915 = 2.0/h
h = 2.0 / 0.81915
h = 2.4415 m
round to the nearest tenth
h = 2.4415 = 2.4 m
The length of the hypotenuse is 2.4m
The rate of change on the line is x line goes to the right and y line goes upward
Because $385 for two years is 385+385=770
Twice a month for two years=24x2=48
So 770/48=$16.04
Final answer $16.04