Answer to Question #241406 in Civil and Environmental Engineering for Mr. Lee

Civil and Environmental Engineering

Question #241406

A point source of light is 6 ft. from the center of a sphere with a radius of 3 ft. Find surface area that is brightened.

Expert's answer

"S.A=4\u03c0r^2\\\\\n3^2=9\\\\\n=4\\cdot \\:9\\pi \\\\\n=36\\pi"

Learn more about our help with Assignments: Engineering

Comments

No comments. Be the first!

Leave a comment

Related Questions

1. Determine the radius of the spherical wedge whose volume 12 m3 with a central angle of 1.80 radians.
2. A closed right cylindrical tank with a height of 8 m and 3 m in diameter contains water to a depth o
3. The volume of a frustum of a rectangular pyramid is 79.17 m3 with an altitude of 5 m. If the upper b
4. If two cylinders, both of radius 1m, intersect at right angles, Find the volume of the intersection.
5. The shaded region below is the common area to four semicircles whose diametersare the sides of the s
6. The two circles below have equal radii of 4 units each and the distance between their centers is 6 u
7. He counted his paces along the corridor which was 15m long. It took him 230 strides from Bangga Paty