Question

will medal and fan

A circular piece of metal has a radius of 3.5 meters.
The metal sells for $3.25 per square meter.

What is the total cost of the circular piece of metal?

A.
$11.38

B.
$38.47

C.
$71.44

D.
$125.01

Answer 1

Okay so do you know how to find the area of a circle?

Answer 2

sadly, no.

Answer 3

okay thats okay we all forget and theres always time to learn something new
so the area for a circle is
A= 3.14(pi/exactly)*Radius(3.5)*Radius(3.5)

Answer 4

do you understand that or did i confuse you?

Answer 5

um, kinda

Answer 6

i got D.
is that correct?

Answer 7

ok illtake you through this step by step.
1. Area= 3.14*r*r
2. Area= 3.14*3.5*3.5
3.Area= 3.14*12.15
4. Area= 38.64500
5. So we round, 38.64500 could not be a price we round to 2 numbers after the decimal

Answer 8

my bad
5. so we round 38..465000

Answer 9

we round to a logical price someone could pay and we get
38.47

Answer 10

so we get our answer
to buy the piece of circular medal with a radius of 3.5 it would be that it would cost 38.47

Answer 11

I hope that I helped your final answer is B