Answer:
141.4 sq cm
Step-by-step explanation:
to find the area of the outer circle with a smaller circle inscribed within, you find the area of each and subtract the smaller area from the larger
the radius of the smaller circle is 2
we have to find the radius of the larger circle so we use what we know about its circumference:
C = 2πr
43.96 = 2πr
21.98 = πr
21.98 / π = r
r ≈ 7 cm
now use r = 7 to find area of larger circle:
A = πr²
A = π49
Area of smaller circle: 4π
Area of larger circle without including inner section is 49π - 4π = 45π
45π ≈ 141.4 sq cm
Step-by-step explanation:
A mathematical way of expressing profit is to use a positive number. A negative number is used to express a loss
Answer:
c = 5b - 25
Step-by-step explanation:
If
x² − bx + c = 0
where x = 5
we have
(5)² − b*(5) + c = 0
⇒ 25 - 5b + c = 0
⇒ c = 5b - 25 = 5*(b - 5)
False is the correct answer
