Answer:
16.9 m
Step-by-step explanation:
Start with a half a circle. The central angle of a semicircle is 180 deg.
Now subtract 21 deg on each side.
180 - 21 - 21 = 138
The central angle is 138 deg.
The radius is 7 m.
Now we use the formula for the length of an arc of a circle given the radius of the circle and the central angle of the arc.
Answer:
The sum of the measures of the angles in a triangle is equal to 180 degree.
In triangle FGH;
or
Substitute the given values from the given figure we have;
Simplify:
Given that:
Using Cosine ratio:
In a given figure:
Base = GH = x and Hypotenuse = FH = y = 80 cm
Then;
or
cm
Therefore, the value of :
x = 43.57 cm
y = 80 cm