One advantage of the prismoidal formula is that you can use it to a. estimate the volume of solids that are combinations of other solids. b. calculate both volume and surface area. c. calculate precise volumes of all prismoids. d. determine volumes of figures that aren't prismoids.

C. calculate precise volumes of all prismoids.The general prismoidal formula can be used to calculate the volume of any prismodal.

In a right-angled triangle: 1- the hypotenuse is the longest side2- we can apply pythagorean rule which states that: (hypotenuse)^2 = (side1)^2 + (side2)^2for the given triangle,longest side is 15 cm  side1 = 9 cmside2 is 12 cm  to check whether the triangle is right-angled or not,compare (15)^2 to the summation of (9)^2 and (12)^in other words, compare 225 to the summation of 81 and 144if they are both equal, then the triangle is right-angles, otherwise, it is not.you haven't provided the diagram showing her work, so i cannot tell the choice. however, apply my explanation to the question you have.

True the answer is true