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How do you find the area of a circle when the diameter is nine?
Wiki User
∙ 14y ago
pi x (d/2)2 = 81pi/4
Wiki User
∙ 14y ago
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What is the circumference of a circle with a diameter of nine feet?
The circumference of a circle with a diameter of nine feet is: 28.27 feet (diameter x Pi = circumference).
What is the diameter of a circle who's circumference is 28.26 miles?
The diameter of a circle who's circumference is 28.26 miles is: nine (9) miles
What happens if you triple the radius of a circle?
If you triple the radius of a circle . . . -- You should not expect anything to happen. Those around are likely to remain completely unaware that you have done anything to your circle. -- You wind up with a circle that's three times as big as it used to be. -- The diameter of the circle is three times the original diameter. -- The circumference of the circle is three times the original circumference. -- The area of the circle is nine times the original area.
What is the area of a circle with a radius of 9 centimeters?
The area of a circle with a radius of nine centimeters is: 254.5 cm2
How to findthe circumferance of a circle with the diameter of nine?
Easy. The circumference of a circle is found by multiplying the diameter by Pi (3.1416). So, in this case: 9 x Pi (3.1416) =a circumference of 28.2744
What happen to the area of circle when the radius is triple?
The area increases to nine times the original area.
When the radius of a circle is tripled what happens to the area?
It is increased nine fold. New Area = 9*old area.
What's the area of a circle with a diameter of one foot nine and forty two hundredths square feet or seven hundred five thousandths square feet?
The radius will be 10.5in or 0.875ft. pi r 2 is 346.36 square feet, not either of the 2 you've listed
What is the diameter of NBA BASKETBALL AND RIM?
The basketball ring is 18 inches in diameter while the ball is nine inches in diameter.
What is the Benross innovator stand bag top diameter?
This bag has a nine inch top diameter.
How many 0.50 inches diameter pipes are equal to the 1.50 inches diameter pipe?
Nine.
Why would the perimeter triple and the area multiply by nine when the radius of a circle is tripled?
Because the perimeter (circumference) is 2*pi*r is proportional to r. The area a = pi * r2 is proportional to r2
