The volume of an object V bounded by a closed curved surface S is given in work which of the following?

answer is because 4×10=40

and 98×4= is 392

40,392

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

the correct answer would be c