r = (C / π) / 2
Actually the formula of the circumference is Pi multiplied to diameter; where the diameter is equal to twice the radius.
C = π d
d = 2 r
C = π * 2r
If we need to find the radius from the Circumference then
r = (C / π) / 2
You must differentiate Pi from the number 2 because 2 is part of the radius. This is also to avoid confusion.
For example: r = 5 ; π - 3.14; find the circumference
C = π * 2r
C = 3.14 * (2*5)
C = 3.14 * 10
C = 31.40
If the circumference is given and the radius is missing, then,
r = (C/π) / 2
r = (31.4 / 3.14) / 2
r = 10 / 2
r = 5
5 and 8
Step-by-step explanation:
area= base x altura= 5x8=40
perimetro= base+base+altura+altura = 5+5+8+8=26
Answer:
2 units
Step-by-step explanation:
because the only whole number factor pair to 10 is 2x5 and luckily, it turned out that 5-3=2, so there are no decimals or fractions. Yay!
Answer:
None.
Step-by-step explanation:
This has no real factors.
1 hour = 60 minutes
Tuesday: 60 divided by 4 = 15. Karen did it 3/4 of a hour so we multiply 15 by 4 which is 45. 45 equals 45 minutes. On Tuesday, Karen finished her chores in 45 minutes
Wednesday: first we divide 60 by 12 which is 5. 5 would equal 5 minutes. now we multiply 5 by 5 which is 25. Karen finished her chores in 25 minutes.
Answer: Karen finished her chores 20 minutes faster on Wednesday than Tuesday.
Hope this helps!
