SOLUTION: The Gwennap Pit The area of a circle equals Pi (π) r2. The radius of the second seating level is s=2 meters and the radius of the third seating level is s+3. The area of the thi

Question 1136564: The Gwennap Pit
The area of a circle equals Pi (π) r2. The radius of the second seating level is s=2 meters and the radius of the third seating level is s+3. The area of the third seating level can be found by subtracting the areas of two circles.
The area of the third seating level is 2 π s+ 5 π, or about 6.3s + 15.7 square meters.
Referring to above example:
a. Write and expression for the area of the fourth seating level in the Gwennap Pit
b. The radius of the stage level of the Gwennap Pit is 3 meters. Find the area of the stage
c. Find the area of the fourth seating level in the Gwennap Pit.

Answer by greenestamps(13208) (Show Source): You can put this solution on YOUR website!

The problem is very poorly presented, making it impossible to answer most of the questions.

"The radius of the second seating level is s=2 meters and the radius of the third seating level is s+3".

That means the radius of the third seating level is 5 meters.

"The area of the third seating level can be found by subtracting the areas of two circles."

So the area of the third seating level is (25pi)-(4pi) = 21pi.

"The area of the third seating level is 2 π s+ 5 π, or about 6.3s + 15.7 square meters."

Since the area is 21pi, this implies that s=8 meters. But s was defined as being 2 meters. That's a contradiction -- unless s suddenly has a new meaning.

"Referring to above example:
a. Write and expression for the area of the fourth seating level in the Gwennap Pit
b. The radius of the stage level of the Gwennap Pit is 3 meters. Find the area of the stage
c. Find the area of the fourth seating level in the Gwennap Pit."

The area of the stage level is 9pi.

There is no information given about the fourth seating level, so the other two questions can't be answered.
RELATED QUESTIONS
what is the radius of a circle with area of 100 pi sq... (answered by Alan3354)

What is the area of a circle with a radius of 2 meters? Use 22/7 for .pi (answered by Alan3354)

the circumference of a circle is 20 pi inches. Find its radius and area. the radius of (answered by Alan3354)

1)If the sum of the areas of two circles with radii r1 and r2 is equal to the area of a... (answered by edjones)

Given the formula A = πr2, find the area (A), of a circle whose radius is... (answered by Alan3354)

the circumference of a circle is 16 pi inches. Find its radius and area the radius... (answered by solver91311)

Find a polynomial that represents the area of a circle whose radius is b+1 meters. Using (answered by thechamp1011)

How do you find the radius of a circle with the circumference of 42 pi... (answered by ikleyn,Alan3354)

If the radius of a sphere is doubled, the area of the sphere is muliplied by ______ and... (answered by josgarithmetic)