Question

SOMEONE PLEASE HELP!!!!

Which area formula or formulas show(s) a joint variation?
I A=s^2
II A=pir^2
III A=l*w

Select one:
a. III only
b. II and III
c. II only
d. I, II, and III

Answer 1

Explanation:

Answer 2

Joint variation equation is a situation when the final value varies by two or more variables

Equation 1

A = s²

Here we have only one variable, 's', and the value of Area will only vary when s varies.

Equation 2

A = πr²

Here the only variable is 'r', which is the radius of a circle. The value of Area, A, varies as radius varies. π is a constant.

Equation 3

A = l×w

Here we have to variables, the 'l' and the 'w'.
We can say that the value of Area, A, will vary jointly as l and w vary

The correct answer is option a)