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
Answer should be 4
Explanation: 30 divided by 8 = 3.75
3.75 rounded is 4
Prob of tails times prob of rolling more than 3
0.5 × 0.5 = 0.25
25%
Answer:
(π/4) - (1/4) square units
Step-by-step explanation:
I just got this question on Ignitia.
Answer:
the second one
Step-by-step explanation:
