Answer:
A car travels 20km in 15 minutes, what is the average speed that the car travelled at?
the average speed that the car travelled at is 80km per hour
Step-by-step explanation:
Th answer is d.
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Answer:
Because the first has () and the second doesn't so if u multiply the first one you will have to start with the () but if u answer the second u can start with anything
The cross-section of a sphere is a circle . The area of a circle can be calculated by the formula A=
Where r is the radius of the circle.
Given :
Solving for r we have:

Or r= 10.
The area of a sphere is calculated by the formula :

Substituting r value we have:
SA= 
The total surface area of this sphere is 400π .