Wednesday

July 23, 2014

July 23, 2014

Posted by **Emma** on Sunday, May 4, 2014 at 8:46pm.

1.The surface are of the exterior of hollow rubber ball is 16pi in^2.The rubber is 1/4 inch thick. Find the surface are of the interior of the ball.

2. The length of each side of a cube is 6 inches long. Find the exact area of a sphere inscribed in the cube.

- Geometry -
**Steve**, Sunday, May 4, 2014 at 11:48pmevidently r=4

so, the inside radius is 3.75

The inside area is 4pi * 3.75^2

The inscribed sphere has a diameter of 6, and a radius of 3.

v = 4/3 pi r^3

plug and chug

also, the length is not six inches long. Each side is six inches long; the length is just six inches.

**Related Questions**

physics - A soft synthetic rubber ball of radius 9 cm is submerged to 7.5 m ...

Algebra - 1) the ideal surface area of a rubber ball shipped from the factory is...

AP Physics - A ball of mass 0.1 kg is attached to a rubber band, which we can ...

math - A 5-inch section of a hollow brick measures 12 inches tall and 8 inches ...

Math - A 5-inch section of a hollow brick measures 12 inches tall and 8 inches ...

Physics - A 0.18 kg point mass moving on a frictionless horizontal surface is ...

Physics - 0.17 kg point mass moving on a frictionless horizontal surface is ...

physics - A large air-filled rubber ball is tethered to the bottom of a swimming...

Math Urgent - 17. A box contains 95 pink rubber bands and 90 brown rubber bands...

math - 5. A rubber ball dropped on a hard surface takes a sequence of bounces, ...