Answer:
The radius is 7
The diameter is 14
The circumference is 43.98 (if they want it simplified put 44)
Step-by-step explanation:
1.The radius is already given in the picture so the answer is 7
2.To find the diameter, multiply the radius by two. 7 times 2=14
3.The formula for circumference is C=2
r. Remove the r and replace it with the number 7. Plug 27 into your calculator and you will get 43.98
Answer: 800pi inches
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Explanation:
The formula to find the circumference of a circle is
C = pi*d
where
C = distance around the circle (aka circumference)
pi = 3.14 approximately
d = diameter
We know that the diameter of the wheel is d = 8, so
C = pi*d
C = pi*8
C = 8pi
is the circumference of the wheel
One full rotation will have the wheel cover a distance of 8pi inches. Imagine that wet paint is on the outer surface of the wheel. If the wheel is rolled out in a straight line, then the wet paint would cover a linear distance of 8pi inches along the flat ground. This is one full rotation, so 100 rotations covers 100*8pi = 800pi inches
Note: if we use pi = 3.14 as the approximation, then the hamster ran approximately 800*pi = 800*3.14 = 2512 inches if the wheel could move
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Answer:
B ( 3.7 , -1.1)
Step-by-step explanation:
<h3>
Given</h3><h3>
x + y = 2.6.......equation 1</h3>
y = 3x - 12.2.......equation 2
Putting equation 2 I. equation 1
x + 3x - 12.2 = 2.6
4x = 2.6 + 12.2
4x = 14.8
Therefore x = 3.7
Now
y = 3 * 3.7 - 12.2
= 11.1 - 12.2
= -1.1
