...inches in diameter is equal to the sum of the areas of two circles 1| and 2 inches in diameter. 18. If the volume of a sphere varies as the cube of its radius, find the radius of a sphere whose volume equals that of the sum of two spheres whose radii are respectively...

...y when x = 8. 8. If 3 x — 4 varies directly as y + 5 and x = 2 when y = 3, find x when y — 15. 9. The volume of a sphere varies as the cube of its radius. If the volume of a sphere whose radius is 7 inches is 1437.3 cubic inches, what is the volume of a...

...varies as the square of its radius. If V is the volume of a sphere of radius r, then V = t тгг3. The volume of a sphere varies as the cube of its radius. If A is the area of a rectangle the lengths of whose sides are x and y, then A = xy. If the area of...

...the area of a circle of radius 2 ft. is 12-57 sq. ft. Kind the area of a circle of radius 3-4 ft. 2. The volume of a sphere varies as the cube of its radius, aguí a sphere of radius 3 ft. has a volume 113-1 cu. ft. Find the volume of a sphere of diameter 4-6...

...According to legend, a wise man used deductive reasoning to prove to an ancient Chinese Emperor that the volume of a sphere varies as the cube of its radius. The Emperor, not understanding the deductive argument, ordered his servants to bring in spheres of...

...varv. Example 7 Three spherical metallic balls of radii rb r, and r, are melted to form a n. .. one. If the volume of a sphere varies as the cube of its radius, find the radius of the resulting ball. Ans: If v and r denote the volume and the radius of a spherical...