Question

The ball has a diameter of 7 inches. The cylindrical hole has a diameter of 1 inch. Which of the following is the best estimate of the volume, in cubic inches, of the ball without the treat section? Round to the nearest tenth.

Answer 1

Answer:

1060 cubic inches

Step-by-step explanation:

volume of ball=π×7×7×7=343π

volume of cylindrical hole=π×1×1×7=7π

volume of ball without treat sec.=343π-7π=336π

so estimate vol.=336×22/7=48×22=1056

when rounding off to nearest ten it becomes 1060 cubic inches

Answer 2

Answer:

Step-by-step explanation:

V= 4/3 πr3 <(cubic)

 = 4/3 π (3.5) ^3

= 179.5