4. a student club started a fundraising effort to support animal rescue organizations. the club sent an information flyer home to the n students in the school. it says, "we welcome donations of any amount, including any change you could spare! " their goal s to raise t dollars, and to donate to a cat shelter anda dog shelter.

pi x^2

step-by-step explanation:

pi times x squared

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus