Tutors Answer Your Questions about Circles (FREE)
Question 237227: 1)If the sum of the areas of two circles with radii r1 and r2 is equal to the area of
a circle of radius r, then
a) r1 +r2 = r b) r1^2 +r2^2 = r^2 c) r1 +r2 < r d) r1^2 +r2^2< r^2
2) 2) If the sum of the circumferences of two circles with radii R1 and R2 is equal to the
circumference of a circle of radius R, then
(A) R1 + R2 = R (B) R1 + R2 > R (C) R1 + R2 < R
(D) Nothing definite can be said about the relation
among R1, R2 and R
Click here to see answer by edjones(8007)   |
Question 239337: It is proposed to build a single circular park equal in area to the sum of areas of two circular parks of diameters 16 m and 12 m in a locality. The radius of the new park would be
(A) 10 m (B) 15 m (C) 20 m (D) 24 m
Click here to see answer by Theo(13342)  |
Question 242605: I have a circular part within a rectangle. The rectangle measurements are 22cm by 15cm. I need to make the largest circle I can with that metal rectangle piece. I need to discover what size that circle will be as well as how much of the rectangle is remaining afterwards. I do need to have a formula to use later in doing the same thing.....
Click here to see answer by rapaljer(4671)  |
Question 252952: kevin designs a sprinkler system for his yard. one rotation of the sprinkler waters a circle with an area of 225π square feet. What is the radius,r,of the circle the rotating sprinkler waters?
Click here to see answer by drk(1908) |
Question 252971: A circular flower bed has a circuference of 18.84 feet. The scale used in making a drawing of the bed is 1"=3'. Determine the length in inches of the diameter on the scale drawing. Express your answer to the nearest whole number.
Click here to see answer by Greenfinch(383)  |
Question 253303: An arch is built so that it is 6 feet wide at the base. Its shape can be represented by a parabola with the equation y = -2x2 + 12x, where y is the height of the arch. The maximum height, y, of the arch is blank feet
Click here to see answer by Earlsdon(6294) |
Question 254593: Please help!!! I'll try to explain this well enough to understand since I cannot c&p the figure. But if possible... Please explain!!!Thanks so much=)
I need to find the area of a figure shaped like an ice cream cone. The top (semicircle) is 6m. The figure shows an arc in the semicircle (I'm not real sure about the importance of that). And the bottom of the "cone" is 8m.
If you can make sense of this, I would greatly appreciate any help!!!!!
Click here to see answer by drk(1908) |
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