A circle has a diameter of 5 feet. What is the area of the circle in square feet? Round your answer to the nearest tenth.
2007-05-11 01:15:27 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Area = PI*D^2/4
=(22/7)*(25/4)
=(22*25*4)/(7*4*4)
=2200/112
=19. 6 Sqft
You being a kid Pi is taken as 22/7
if u take Pi as 355/113 u will get better value it will be 221875/11300
2007-05-11 01:40:51 · answer #1 · answered by RAJASEKHAR P 4 · 1⤊ 1⤋
The formula is pi*r^2, where r is the radius of the circle...
r = d / 2, where d is the diameter (5 ft)
r = 5 / 2...
Area = pi * (5/2) * (5/2)
Area = 20 sq ft
2007-05-11 01:24:32 · answer #2 · answered by Faraz S 3 · 0⤊ 0⤋
Thought your Yahoo identity was mathkid. Surely you can work this out yourself. Don't you know the formula for area of circle given radius or diameter.
2007-05-11 01:20:27 · answer #3 · answered by Anonymous · 1⤊ 1⤋
Area=πr^2= π *(5/2)^2= π*6.25=19.6Sqft
2007-05-11 01:27:44 · answer #4 · answered by venkashok 3 · 0⤊ 1⤋
a = pi * r^2
r = 5/2
a= 19.6 square feet
2007-05-11 01:22:28 · answer #5 · answered by Anonymous · 0⤊ 1⤋