We will determine the surface area as follows:

So, the total surface area is 150 cm^2.
Answer:
yes
Step-by-step explanation:
answer above
Answer: the average speed = 6 miles/hour
Step-by-step explanation:
Average speed is ( total distance ) / ( total time )
For the 1st 6 miles
6=4.t
t=1.5 hrs
let s = speed for last 2.5 hrs
hope it helps
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