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kati45 [8]
2 years ago
12

Help pls I will get a hit if I don’t

Mathematics
2 answers:
White raven [17]2 years ago
8 0

Answer:

d.  87.92

Step-by-step explanation:

3.14*2*14=87.92

i know its right im positive

dem82 [27]2 years ago
7 0

Answer:

87.92

Step-by-step explanation:

The formula for the circumference of a circle is 2πr.

We know that r is 14 and π is 3.14.

Let's plug in 3.14 for π and 14 for r.

2 * 3.14 * 14 = 87.92

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The cost of 1kg of coal mined from the ore is $0.0397

Data;

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<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.

1ton = 907kg\\

let's write this and equate it

1 ton = $35.99

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1kg = x

Let's cross multiply both sides and solve for x

907kg = \$35.99\\1kg = x\\x = \frac{1 * 35.99}{907} \\x = \$0.0397

The cost of 1kg of coal is $0.0397

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