Step-by-step explanation:
357-200 is 157 extra minutes (we are only counting the extra minutes)
157*0.25 is 39.25 (this is how much is the extra minutes in total cost)
therefore, add 39.25 and 29.99
29.99+39.25 is 62.24
Therefore, the total bill was $62.24
hope this helps :)
Have a nice day !
To find the length of the wire, use the Pythagorean theorem
a^2 + b^2 = c^2
18^2 + 40^2 = c ^2
324 + 1600 = c^2
1924 = c^2
44 = c
The wire is approximately 44 feet.
Hey! The surface area is 294. Have a great day. :-)
Answer:
the solutions are these
Step-by-step explanation:
Answer: This coil will not be enough to complete the job.
Step-by-step explanation:
The circumference of the coil of wiring can be calculated with:
Where r is the radius and
The radius can be calculated by dividing the diameter by 2. Then:
Convert 9 inches to yards (1 yard=36 inches):
Substitute this radius into the formula:
Since there are 21 circles of wire, you need to multiply by 21:
The coil has 32.97 yards of wire and Alex needs 34 yards, therefore, this coil will not be enough to complete the job.