Question

Question #19ef1

Answer 1

`W=8.31d^3 = 8.31 * 7^3 =8.31 * 343 ~= 2850`

Explanation:

The trick here is to guess what the variables in the equation mean. In this case we have `W` and `d`. The question asks us to determine weight, and gives us diameter. From this we guess that

`W implies` weight

and

`d implies` diameter.

Since the diameter was given to be 7 feet, we can substitute that into the equation:

`W=8.31d^3 = 8.31 * 7^3 =8.31 * 343 ~= 2850`

The question gives us no units for the weight, so this is as far as we can go.

Note: Use of the calculator

Since you asked about the calculator, the function that you may not be used to in this question is the power of `3`. To do this, we use the `y^x` button on the calculator. On most calculators you do the following:

This should give the answer `125`.

If the answer came out to be `243 = 3^5` then you'll need to reverse the order you put in the exponent, `3`, and the base `5`. Also, some calculators make you push the shift button to access the `y^x` function. If you still need help, ask your teacher for help with your calculator!