If diameter of a circle is 28 cm,then the circumference of the circle is equal to
2 answers:
C = 2 pi r
R is radius and it’s half of diameter
Pi is always a constant = 3.14
Diameter = D = 2r
We substitute the 2r with D
C = D pi = 28*3.14
Circumference = 87.9 cm (don’t forget your units)
Answer:87.92
Step-by-step explanation: you multiply the diameter by pie or 3.14 to get the circumference
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Hello,
n = 20
d = 6
a = 4
L = a + (n - 1)*d
L = 4 + (20 - 1)*6
L = 4 + 19*6
L = 118
Sum = (a + L)*n/2
Sum = (4 + 118) * 20/2
Sum = 122 * 10
Sum = 1220
Answer:
about 3.9 lbs
Step-by-step explanation:
18 7/9 lbs - 14 7/8 lbs
convert mixed numbers to improper fractions
169/9 - 119/8
convert to common denominator
1352/72 - 1071/72
subtract numerators
281/72
about 3.9 lbs
0.10(5000) = 500
0.15(10,000) = 1500
total commission on 15,000 = (150 + 500) = 2,000
Y=2x+1... I hope this helps love! :)
