I NEED HELP!! the surface of area. A of a cylinder can be determined from the radius. R, height, H, and circumference of the circular base, C, using formula.
which equation shows this formula solved for the radius?

the answer is on the bottom

Step-by-step explanation: It's either one of these, but I don't know

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)