A glass marble has a diameter of 18 millimeters. What is the approximate volume of the marble? Use 3.14 for .
1 answer:
The volume of the sphere is 3,052.08 cubic millimeters. The correct answer is A.
<h3>What is the volume of sphere?</h3>If the given sphere is of radius r units, then its volume is given as:
A glass marble has a diameter of 18 millimeters.
The radius is 9
The volume of the sphere is 3,052.08 cubic millimeters. The correct answer is A.
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Answer:
The answer is below
Step-by-step explanation:
The diameter of a tire is 2.5 ft. a. Find the circumference of the tire. b. About how many times will the tire have to rotate to travel 1 mile?
Solution:
a) The circumference of a circle is the perimeter of the circle. The circumference of the circle is the distance around a circle, that is the arc length of the circle. The circumference of a circle is given by:
Circumference = 2π × radius; but diameter = 2 × radius. Hence:
Circumference = π * diameter.
Given that diameter of the tire = 2.5 ft:
Circumference of the tire = π * diameter = 2.5 * π = 7.85 ft
b) since the circumference of the tire is 7.85 ft, it means that 1 revolution of the tire covers a distance of 7.85 ft.
1 mile = 5280 ft
The number of rotation required to cover 1 mile (5280 ft) is:
number of rotation =