What is the mean of the data set belo?
12 15, 10, 11

12

Step-by-step explanation: The mean of a data set is equal to the sum of the set of numbers divided by how many numbers re in the set.

So to find the mean of the data set shown here,

let's begin by adding the numbers.

So we have 12 + 15 + 10 + 11 which is 48.

48 will divided by the number of numbers in the set which is 4.

So we have 48 ÷ 4 which is 12.

So the mean of the data set shown here is 12.

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: