Pleaseeeee help with this! Thank you so much!
1 answer:
Answer:
≈ 7.85 cm
Step-by-step explanation:
The area (A) of a circle is calculated as
A = πr² ( r is the radius )
given A = 225π , then
πr² = 225π ( divide both sides by π )
r² = 225 ( take square root of both sides )
r = = 15
the arc length is calculated as
arc = circumference × fraction of circle
= 2πr ×
= 2π × 15 ×
= 30π ×
=
≈ 7.85 cm ( to 2 dec. places )
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Second, subtract '29 - 11' to get '18'.
Third, since we are solving for f, we have to get it by itself. Multiply each side by 'f'.
Fourth, once again, we need to get 'f' alone. Divide both sides by 18.
Fifth, now that we have 'f' by itself, we can simplify the current fraction. To do so, we need to start off with listing the factors of 4 and 18 and find the greatest common factor (GCF).
Factors of 4: 1, 2, 4
Factors of 18: 1, 2, 3, 6, 9, 18
Out of the listed factors, 1 and 2 are the common factors, and since 2 is the highest number out of them, it is considered the greatest common factor. The GCF is 2.
Sixth, divide the numerator and denominator by the GCF (2).
Seventh, we can now rewrite our fraction in simplest form and switch sides.
Answer in fraction form:
Answer in decimal form: