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
F(b)=7b+8
you just need to change the x variable. make y into f(x) or in this case f(b)
Megan has $5,621 to give to charity. She wanrs to give the money to 23 different charities. Each charity will get the same amount. How much money will each charity get? How much will be left over? Answer: 22r9
1/3 you can use two formulas but I recommend rise over run
Answer:
The area of the base is 15 in²
Step-by-step explanation:
33 3/4 = 33.75
2 1/4 = 2.25
To calculate the area base of a rectangular prism we have to use the following formula:
a = area
v = volume = 33.75 in³
h = height = 2.25 in
v = a * h
we solve a
a = v / h
we replace the values that we know
a = 33.75 in³ / 2.25 in
a = 15 in²
The area of the base is 15 in²
