Please help.. surface area of cylinder
1 answer:
Remember that the surface area of an object is the area of all of its faces added up.
The area of one circle is:
The area of the rectangle is a little more complex. We are missing the length of one side, which is the circumference of one of the base circles (think about when the diagram above is made into a three-dimensional cylinder). The circumference of the circles is:
The area of the rectangle is thus:
When all of the areas are added together, we find that the total surface area of the shape is:
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Question is Incomplete, Complete question is given below.
Latanya and George are saving up money because they both want to buy new bicycles. Latanya opened a savings account with $50. She just got a job and is determined to save an additional $30 a week. George started a savings account with $75. He is able to save $25 a week. Find the time (in weeks) when Latanya and George will have the same amount of money in their savings accounts.
Answer:
Latanya and George will have same amount after 5 weeks.
Step-by-step explanation:
Given:
Opening Amount in account of Latanya = $50
Amount deposited every week = $30
Let number of week be 'w'.
Total Amount in Latanya savings account will be equal to Opening Amount plus Amount deposited every week multiplied by number of week.
framing in equation form we get;
Total Amount in Latanya savings account =
Also Given:
Opening Amount in account of George = $75
Amount deposited every week = $25
Let number of week be 'w'.
Total Amount in George savings account will be equal to Opening Amount plus Amount deposited every week multiplied by number of week.
framing in equation form we get;
Total Amount in George savings account =
Now we need to number of week when both will have same amount.
Now to find number of week when both will have same amount we need to make both the equation same we get;
Hence Latanya and George will have same amount after 5 weeks.