A thirsty crow wants to raise the level of water in a cylindrical container so that it can reach the water with its beak.

The container has a diameter of 2 inches and a height of 9 inches

The water level is currently at 6 inches

The crow can reach the water if it is 1 inch from the top of the container.

The crow puts pebbles in the water to raise the water level

If the pebbles have a diameter of 1/2 inches, what is the fewest number of pebbles the crow needs to drop in the water to reach the water?

Question

Mathematics

Ayden Rose

21 September, 06:44

A thirsty crow wants to raise the level of water in a cylindrical container so that it can reach the water with its beak.

The container has a diameter of 2 inches and a height of 9 inches

The water level is currently at 6 inches

The crow can reach the water if it is 1 inch from the top of the container.

The crow puts pebbles in the water to raise the water level

If the pebbles have a diameter of 1/2 inches, what is the fewest number of pebbles the crow needs to drop in the water to reach the water?

+4

Answers (2)

Know the Answer?

Damarion Fernandez · Answer 1

the first option that it shows you. i did the test i got 100

Dana Cohen · Answer 2

Step-by-step explanation:

calculate volume (V1) of each pebble whose diameter is 1/2 inches.

calculate the volume of increased level portion (V2) height=9 - (6+1) = 2inches and diameter 2inches.

Then,

Use formula,

N=V2/V1