Answer:
Exact area: 39.2π cm²
Approximate area: 123.2 cm²
Step-by-step explanation:
The area of a circle is πr².
A full circle can be thought of as a sector of a circle with 360° of central angle. For a sector of a circle with a central angle of n°, multiply the area of the circle by the fraction n°/360°.
The formula for the area of a sector of circle with central angle n° and radius r is
A = (n°)/(360°) × πr²
Here we have n = 72; r = 14 cm
A = (n°)/(360°) × πr²
A = (72°)/(360°) × π × (14 cm)²
A = 39.2π cm² = 123.2 cm²
For the lateral area, don't include the base area. For the surface area, you should include it.
If we use the surface of the water as our frame of reference, then Christy's vertical position could be represented by -12 ft.
The solution is 12. The problem tells you that when is between 9-13. Then 12 is the answer
Answer:a
Step-by-step explanation:
