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
Ans: Four shortcuts allow students to know two triangles must be congruent: SSS, SAS, ASA, and AAS. Knowing only side-side-angle (SSA) does not work because the unknown side could be located in two different places. The same is true for side angle side, angle side angle and angle angle side.
Answer: 16 2/3%
Step-by-step explanation:
Given that:
Shape are either square or circle with both equally likely :
Hence,
P(square) = 1/2 ; P(circle) = 1/2
Color are either blue, red or green with the three equally likely ;
P(red) = 1/3 ; P(green) = 1/3 ; P(blue) = 1/3
Probability of creating a green circle :
Independent probability
P(green n circle) = p(green) * p(circle)
P(green n circle) = 1/3 * 1/2
P(green n circle) = 1/6
= 0.16666
(0.16666 * 100%) = 16.6666%
= 16 2/3%
Answer:
hambuger cheesebuger big mac whooper
Step-by-step explanation:
