please help me to solve this?
2008-03-24 5:15 pm
she has a circular swimming poolthat has a diameter of 24 feet.She wants to cover the top of her pool.How much material is needed to cover the total area of the pool?
回答 (7)
2008-03-24 5:21 pm
✔ 最佳答案
area of a circle = pi * radius * radius= pi * 12 * 12 = 144 pi
2008-03-25 12:21 am
A = Ïr^2
Ï(24/2)^2
= 3.14(12)^2
= 3.14(144)
= 452.16 square feet
Ï(24/2)^2
= 3.14(12)^2
= 3.14(144)
= 452.16 square feet
2008-03-25 12:24 am
all you have to do is find the circumference...not that hard
2008-03-25 12:21 am
the area of a circle is pie time radius squared.
so the radius is half the diameter . the radius is 12. 12 squared is 12 times12 so that is 144 now u multiply 144 and pie. pie is 3.14 now the answer is 37.68 square feet. if u need to round it to the nearest foot. it would be 38 square feet
hope that helpss=]
so the radius is half the diameter . the radius is 12. 12 squared is 12 times12 so that is 144 now u multiply 144 and pie. pie is 3.14 now the answer is 37.68 square feet. if u need to round it to the nearest foot. it would be 38 square feet
hope that helpss=]
2008-03-25 12:20 am
Area = (pi/4)(d^2)
where d = pool diameter
Therefore,
Area = (pi/4)*(24^2)
Area = (pi/4)* 576
Area = 452.39 sq ft of material will cover her pool.
where d = pool diameter
Therefore,
Area = (pi/4)*(24^2)
Area = (pi/4)* 576
Area = 452.39 sq ft of material will cover her pool.
2008-03-25 12:18 am
Multiply by 3.142
2008-03-25 12:17 am
Very difficult! I cant solve this!
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