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Tutors Answer Your Questions about Surface-area (FREE)
Question 73683: the volume of a cylinder is given by V=pier^2h where r is the radius of the cylinder and his the height of the cylinder. Suppose the volume of the can is 100 cubic centimeters.
a) write h as a function of r. Keep pie in the function's equation
b) what is the measurement of the height if the radius of the cylinder is 2 centimeters. round to the nearest whole number. show work
c) graph this function
Click here to see answer by ankor@dixie-net.com(6693)   |
Question 73679: An open top box is to be constructed from a 6 foot by 8 foot rectangular cardboard by cutting out equal squares at each corner and the folding up the flaps. Let x denote the lenght of each side of the square to be cut out.
a)find the function V that represents the volume of the box in terms of x.
b) graph the function and show the graph over valid range of the variable x.
c) Using the graph, what is the value of x that will produce the maximum volume
Click here to see answer by jim_thompson5910(13794)  |
Question 74860: If the radius of a circle is 3 and is located inside of a square touching all 4 sides, what is the area of the 4 corners of the square? (Use 3.14 for pi)
This is multiple choice question. Need to see the formula that is used.
Multiple choice answers:
A. 5.15 sq units
B. 17.16 sq units
C. 7.74 sq units
D. 21.72 sq units
Thank you!
Click here to see answer by jim_thompson5910(13794) |
Question 74860: If the radius of a circle is 3 and is located inside of a square touching all 4 sides, what is the area of the 4 corners of the square? (Use 3.14 for pi)
This is multiple choice question. Need to see the formula that is used.
Multiple choice answers:
A. 5.15 sq units
B. 17.16 sq units
C. 7.74 sq units
D. 21.72 sq units
Thank you!
Click here to see answer by psbhowmick(456) |
Question 78969: How would I draw a venn dram.I got the problem but no idea how to do the rest. Helppp please thank you
on haloween the big pumpkin vitis the homes of all children, all grandmas, and all poets in tiwn. how many homes does he vitis , using these statistics. draw a venn diagram. 250+700+48=998 homes
children-- 800
grandmothers- 250
poets- 60
children and grandmothers...100
children and poets..10
grandmothers and poets...3
grandmothers and poets and children..1
Click here to see answer by mathdoc314(58) |
Question 80401: To restore medieval castle in Eorope, the conical roof of one of its round towers had to be painted with a special protective silver paint. If the diameter of the conical roof base 5.84 m and its altitude is 9.76 m, what is the cost of gilding the roof if the rate of painting the roof is equivalent to $27.50/m squared?
Click here to see answer by checkley75(3666) |
Question 80365: Hi...this would be extremely beneficial for me if somebody could help with this problem: Find the length of each side of a regular hexagon if opposite sides from midpoint to midpoint are 18 inches apart.
Click here to see answer by stanbon(26283) |
Question 80804: If there is a goat tied to a rectangular barn on a 50 foot lead and the barn is 20 feet by 20 feet (floor), what is the maximum grazing area? If there are regions you can't find the area of, provide as good an estimate as you can.
Assume the goat is tied to a corner outside the barn, cannot get in, and that the barn is not grazing area.
Thank you and could you please show me how you got the answer to be what it is?
Click here to see answer by stanbon(26283) |
Question 80809: A man has a barn that is 20 ft by 10 ft. He tethers a cow to one corner of the outside of the barn using a 50-ft rope.
What is the total area that the cow is capable of grazing?
Please show me how you got the answer as well thank you
Click here to see answer by stanbon(26283) |
Question 81793: Architecture: A roofing company is preparing bids on two special jobs involving cone- shaped roofs. Roofing material is usually sold in 100-square-foot squares.
For each roof, find the lateral surface area to the nearest square foot. Then determine the squares of roofing materials that would be needed to cover each surface.
Roof # 1. The cone-shaped part is 23ft with a radius of 8ft.
Roof # 2 the cone-shape part is 12ft. with a radius of 9ft. find the answer for each roof.
Click here to see answer by stanbon(26283) |
Question 81975: 1.) Kari spent half of her money at a shoe store in the mall. At the movie theater, she spent one fourth of her remaining money. Then, she spent $1 on the bus ride home. She had $5 left. How much money did Kari have whan she arrived at the mall ?
Click here to see answer by Edwin McCravy(2922) |
Question 82176: If there is a goat tied to a rectangular barn on a 50 foot lead and the barn is 20 feet by 20 feet (floor), what is the maximum grazing area? If there are regions you can't find the area of, provide as good an estimate as you can.
Assume the goat is tied to a corner outside the barn, cannot get in, and that the barn is not grazing area.
I found only half the answer and need help finding the rest please help.
Heres what I got so far-So first i drew a circle with a 50' radius with its center at the
post. Then I drew the corner of the barn that cuts off 1/4 of the area of the circle.
Area of the circle = (pi)50^2 sq ft. = 2500(pi) sq ft
Only (3/4)(2500(pi)) is available for grazing.
That area is 1875(pi) sq ft = 5890.49 sq ft
This is what the teacher siad to do:You've found a portion of the total grazing area. But, you'll need to envision the additional partial circles that the goat can reach, if he stretches his tether around the barn. And you will have a small overlap area that should be subtracted. Thanks so much for your help!!!
Click here to see answer by scott8148(3382)  |
Question 83334: please help me solv this hard area question, please and thank, even if you try.
Problem=
Courtney is making 72 cookies. She will make rectangles and cut them into triangles. Each rectangle will be 2 inches by 4 inches.What is the area of each cookie? Is she wants to put icing on them, how many cans will she need if each can will cover 48 square inches?
Click here to see answer by stanbon(26283) |
Question 83334: please help me solv this hard area question, please and thank, even if you try.
Problem=
Courtney is making 72 cookies. She will make rectangles and cut them into triangles. Each rectangle will be 2 inches by 4 inches.What is the area of each cookie? Is she wants to put icing on them, how many cans will she need if each can will cover 48 square inches?
Click here to see answer by jim_thompson5910(13794) |
Question 83347: Can you help me please..........thankyou
Terry is selling plants from her garden. Buy 3/$4.50 and get one free.
i)Mrs. Greenthumb wants 20 plants; how much will she pay?
ii)How many plants would you get for $27???
Click here to see answer by vertciel(183) |
Question 83351: Please help me, it will help by actually giving me the answer with steps?
please
Use these prices to answer question 8 and 9
Cologne= $12.99; candle= $4.99
Earrings= $12.99; candy= $5.99
plant=$7.99; Bouquet= $6.99
Neckalace=$5.99; picture frame= $4.89
C.D= $14.99
8)Jake has $20. Which two items could he buy that comes closest to $20 without going over? Remember to include 7% sales tax.
9)how much would the candle and plant cost, include tax?
please help me and give me the ANSWER!!!!!!!! with step by step explanation
Click here to see answer by uma(370) |
Question 83801: The formula for the surface area of a sphere is
 , where A is surface area and r is the
radius of the sphere
a) use the formula to express r in terms of A and
rationalize the denominator. Explain your answer
b) suppose the surface area of a child's ball is
about 113 square inches. Find the radius of the
ball and explain your steps.
Click here to see answer by jim_thompson5910(13794) |
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