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IRINA_888 [86]
3 years ago
5

A circular piece of glass has a radius of 2.1 meters. The glass sells for $1.70 per square meter. What is the total cost of the

circular piece of glass?
Mathematics
2 answers:
Neko [114]3 years ago
7 0

We know that 2.1 is our radius. We will square it and then multiply it by 3.14.

2.1²=4.41

4.41(3.14)≈13.85

Our area is about 13.85. Now we will multiply by $1.70 to find the total cost. This gives us about $23.55. The total cost of the glass would be about $23.55.

Vsevolod [243]3 years ago
6 0
Hello! 

To find the total cost, we will need to multiply the cost per square meter, by the total area. To find the area we will use the formula A=<span>πr</span>². We will use 3.14 for pi.

We know that 2.1 is our radius. We will square it and then multiply it by 3.14.

2.1²=4.41
4.41(3.14)≈13.85

Our area is about 13.85. Now we will multiply by $1.70 to find the total cost. This gives us about $23.55.

The total cost of the glass would be about $23.55.

I hope this helps!


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