Answer:
See explanation
Step-by-step explanation:
Ana started the work nicely by multiplying out factors to get:\
She multiplied correctly using difference of two squares to get:
Unfortunately: She made a mistake in multiplying she mistakenly got instead of . <em>She left out the coefficient of 2.</em>
Therefore the second step should have been:
The next step will now be:
This simplifies to
The question is asking to state or calculate the change in calories after jogging in 20 minutes if 1 minutes, 10 calories is burn, base on that, the possible answer would be 200 calories. I hope you are satisfied with my answer and feel free to ask for more
Answer:
Radius: 10 ft
Diameter: 20 ft
Area: 314.15 ft^2
Circumference: 62.83 ft
Step-by-step explanation:
The radius can be found using the diameter. The diameter is 20 feet which is the line that is given in the circle.
The radius(r) is equal to half the diameter(d):
r = d/2 --> r = 20/2 = 10 feet
The area(A) can be found using the radius(r) and pi or 3.14
A = pi(r^2) --> A = pi(10^2) = 314.15 feet^2
The circumference(C) is found by using the radius(r) and pi or 3.14
C = 2pi(r) --> C = 2pi(10) = 62.83 feet