Ask a New Question

Question

STONE-GROUND FLOUR

The radius of a milestone is 3 meters greater than the radius of another, and their areas differ by 15pi square meters. Find the radius of the larger milestone.
8 years ago

Answers

Steve
If the larger radius is r, then we have

πr^2 = π(r-3)^2 + 15π
r^2 = r^2-6r+9 + 15
6r = 24
r = 4

check:
16π = π + 15π
8 years ago

Related Questions

If the stone strikes the ground 65 m away, find the time of flight and initial speed? Vxi = 17.7 m/... A stone is thrown from ground level at 70m/s. Its speed when it reaches its highest point is 48 m/s.... In Fig. 10-28, wheel A of radius rA is coupled by belt B to wheel C of radius rC. The angular speed... by what factor must the radius of a circle be multiplied to make the area of the cicle 3 times as... a stone thrown from ground level returns to the same level of projection 4s after. with what speed w... 1. A stone throw from ground level returns to the same level 4 s after. With what speed was the ston... 1 A stone thrown from ground level returns to the same level 4 s after. With what speed was the st... A stone is thrown from ground level at 72 m/s. Its speed when it reaches its highest point is 46 m/s... A stone held above the ground has potential energy. When the stone is dropped, potential energy is c... A flour mill produces flour in small bags before distributing them to wholesalers. The average weigh...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use