Answer:

Step-by-step explanation:
3.8 is 2x 3.8/2 is 1.9
Answer: 769.3ft³
Step-by-step explanation:
V =
r²h
V = (3.14)(7)²(5)
V = 769.3ft³
Step-by-step explanation:
picture is not clear but I guess 2,-2
The cost of 1kg of coal mined from the ore is $0.0397
Data;
<h3>The Cost of 1kg of Coal</h3>
To find the cost of 1kg of coal, we can simply and equate 1 ton to its equivalent in ton and the solve.

let's write this and equate it
1 ton = $35.99
907kg = $35.99
1kg = x
Let's cross multiply both sides and solve for x

The cost of 1kg of coal is $0.0397
Learn more on proportions here;
brainly.com/question/870035