Answer:
21 kilometers
Step-by-step explanation:
Let the height be . Then, the length of the base is
. The formula for the area is of the triangle is given by base*height/2. Therefore, the area of the triangle is equal to
, which is in turn equal to 441. Since
must be positive, then
, meaning that the height is
kilometers.
Answer:
Step-by-step explanation:
The picture of the question in the attached figure
we know that
The measurement of the external angle is the half-difference of the arches that comprise
so
Remember that the sum of the major arc and a minor arc is equal to 360 degrees
we have
----> is given
so
substitute the values
Since each barber works 8 hours per day, it means that the barber shop conducts 112 haircuts in 8 hours. This means that it conducts
cuts per hour. Every barber can conduct two haircuts per hour. This means that a generic number of barbers conducts
cuts per hour. But we already know that the shop conducts 14 cuts per hour, so the number of barbers is given by