Need Help With Geometry Problem

Need help in geometry problem?

radius = 4/2 = 2 cm
volume of each ball = (4/3)*pi*r^3= 4/3*3.141*2^3= 33.504
total voume of 7 balls = 7*33.504 = 234.528
assume the water is upto the height h1
volume water of cylinder = pi*r^2*h1

so after the balls are dropped the height of water increases to h2
now the total volume = pi*r^2*h2

so change in volume = pi*r^2*h2 - pi*r^2*h1 (this should be equal to the volume of 7 balls)
=pi*r^2(h2-h1) = 234.528
or h2-h1 = change in height = 234.528/(pi*5^2) = 3 cm

Need help on this geometry problem....?

Poor thing. But you have to describe the picture. Is there another clue in the picture? Possible a measure for angle EBF? Is there a line drawn from E to B?

If EFB and CBF are congruent, then 6x + 4 = 7x - 2. Solving for x gives you that x = 6. So each of those angles would be 40. (( 6(6) + 4 = 40 and 7(6) - 2 + 40 ))

Then take the 40 and put in your picture. I'd help more if I had more info.

I need help on a simple Geometry problem?

A food company sells its corn flakes in boxes of two different sizes: the regular box and the family value box. For the family value box, the length of the box has been increased by 20% , the height has been increased by 10% , and the width remains the same.

By what percentage does the volume of the box increase from the regular box to the value box? Round your answer to the nearest percent.

Need help with 2 geometry problems, please!?

1. A fence needs to be placed around a pool that measures 12 feet by 18 feet. Around the entire pool is an 8 feet wide deck. How many feet of fencing will be needed?

a. 46 feet
b. 62 feet
c. 92 feet
d. 124 feet

2. A 5”x7” picture is framed with a 3 inch frame. What is the perimeter of the framed picture?

a. 24 inches
b. 48 inches
c. 18 inches
d. 36 inches

Any help is greatly appreciated! Thanks

Need help with a geometry problem. I don't understand how to get the circled numbers. Explain how, please?

From looking at the graph in the bottom-right, you can see that:
W is at (-2, 5)
B is at (2, 5)
X is at (8, 5)
A is at (-2, 2)
C is at (8, 1)
Z is at (-2, -2)
D is at (-1, -2)
Y is at (8, -2)
From that you can subtract to figure out the lengths of BW, WA, BX, CX, DY, YC, DZ, and ZA. Multiply them together as sown on the page on the right to find the areas of those four triangles. Then subtract those from the rectangle to get the final answer.

Need help with Algebra/Geometry problem for daughter. I have solved it, but have no idea how.?

OK, so here's the question: The expression 2(l+w) can be used to find the perimeter of a rectangle with a length l and width w. What are the length and width of a rectangle if the area is 13.5 square units and the length of one side is 1/5 the measure of the perimeter? Explain your reasoning.
I figured out the answer. I figured out that if two sides must be 1/5 of perimeter each and two sides must be 1.5/5 of perimeter. So I figured out that the sides must be 3,3,4.5,4.5 units each to equal a perimeter of 15. However, I just figured this out by plugging in numbers until all factors were met. I know there must be a formula to figure out this answer and I need to show my daughter that. Please help this 30+ year old who has forgotten her math knowledge! I need help with the "explain your reasoning" part. Thanks!