The bathysphere was an early version of a submarine, invented in the 1930s. The inside
diameter of the bathysphere was 56 inches, and the steel used to make the sphere was 1.5
inches thick. It had three 10-inch diameter windows. Estimate the volume of steel used to
make the bathysphere to the nearest whole number.
It took about
in. of steel to make the bathysphere.

Step-by-step explanation:

The shape of bathysphere submarine is a sphere and can be imagined as concentric sphere.

Given inside diameter of bathysphere = 56in or radius will be inch

Volume of inside sphere = =

Since the steel is 1.5 inch thick, the volume of outside sphere =  

The changed r will   =

Volume of steel = =

step-by-step explanation:

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