Question

The stack on the left is made up of 15 pennies, and the stack on the right is also made up of 15 pennies. If the volume of the stack of pennies on the left is 390 mm3, what is the volume of the stack of pennies on the right in cubic millimeters? (Hint: only enter numerals in the answer blank)

Answer 1

pls somebody help

Answer 2

@ehuman can i pls get some help

Answer 3

is not the left = to the right?

Answer 4

I dont think so because the left row is straight and the right row isint

Answer 5

15 equal sized and weighted pennies on both sides, it doesn't matter how neat the stack is the both take up the same space i.e. volume.

another way to look at it, each individual penny is 26 cubic mm... no matter how you stack them

Answer 6

26mm^3 *15 = 390 mm^3

Answer 7

Find the circumference and area of a circle with a diameter of 14 inches. Leave your answers in terms of pi.

Answer 8

can I get help with this one please

Answer 9

each penny occupies approximately the same volume.

check this out...

Answer 10

the volume of the stacks are the same.

Answer 11

so my final answer would be 390? because it says to enter numerals in the answer blank

Answer 12

yep

Answer 13

ok thank you, can you help me with this one to please

Answer 14

Find the circumference and area of a circle with a diameter of 14 inches. Leave your answers in terms of pi.

Answer 15

so do you have formulas for the circumference and area in terms of diameter?

Answer 16

\(C=\pi \times d\) where d is the diameter and C is the circumference

Answer 17

\[A = \frac{\pi d^2}{4}\] where d is the diameter and A is the area

Answer 18

or \[A=\pi\left(\frac{d}{2}\right)^2\]

Answer 19

then what would I o after this?

Answer 20

you know what d is, so put the number in place of the letter and simplify.

Answer 21

gotta go. good luck!

Answer 22

\[Circle Area = \pi r^2\]

Answer 23

so whats the answer to this question