Answer:
Its A /1820
Explanation:
I got it correct on edge!
<span>Good Morning!
</span><span>learning its size and how it formed
</span><span>
The difference between craters and calderas is in the formation mode of each of them. Craters generally are more circular and smaller, and result from the projection of gas and magma, while calderas arise from falling stones and rocks.</span>
<span>first thing you need to do is find the area of the circle
A=(pi)r^2
You don't know r, but you do know the diameter is 10, and the diameter is twice the radius so r=5
Then plug that into the area formula, and you'll get A=25pi or 78.54 ft^2
If one bag covers 2 ft^2, then divide your area by 2 and round up to get the number of bags of concrete (40)
hope i helped !!!</span>
all i could find is this map.