8) find the circumference. use 22 over 7 for square root.
the radius of the circle is 3 whole and 1 over 4 ft.
my choices in answers are?
A) 5 whole and 3 over 28 ft. B) 33 whole and 11 over 56 ft.
C) 20 whole and 3 over 7 ft. D) 10 whole and 3 over 14ft.
2006-12-06 03:57:41 · 2 answers · asked by Anonymous in Education & Reference ➔ Higher Education (University +)
Circumference = πd or 2πr (d = diameter, r = radius)
C = 22/7 * 3 1/4
Step 1: Convert 3 1/4 to irregular fraction.
3 * 4/4 + 1/4 = 12/4 + 1/4 = 13/4
Step 2: Multiply 2 fractions.
c = 2 * 22/7 * 13/4 = 2 * 22 * 13 / 7 * 4 = 572 / 28
Step 3: Simplify and convert to a regular number + fraction
572 / 28 = 143 / 7
143 / 7 = 20 * 7/7 + 3/7 = 20 3/7 (C - Solution!)
2006-12-07 05:38:22 · answer #1 · answered by ³√carthagebrujah 6 · 0⤊ 0⤋
there's a severe undertaking with gadgets of measurement right here. you have written sq. centimeters for the circumference, that's nonsense. If the circumference is defined in centimeters, the radius is in simple terms the circumference divided via 2 pi.
2016-12-13 03:53:01 · answer #2 · answered by ? 3 · 0⤊ 0⤋