What is the error 3 x 5 = 3+3+3+3+3

There is no error.

Step-by-step explanation:

3 x 5 equals 15. Good. Now, 3+3+3+3+3 also equals 15.  Meaning, that both equations equal the same number, and that the equation is true.

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation: