An infant playpen is in the shape of a circle. If the playpen has a radius of 2, what is the approximate area of the playpen? Use 3.14 for pi. a 12.56 square meters
b 6.28 square meters
c 3.14 square meters
d 10.14 square meters

The answer is 12.566 or 12.57

Step-by-step explanation:

The formula for the area of a circle is r²

∴ 3.14×(2)² is equal to 12.566 or 12.57

d is the correct answer

step-by-step explanation:

x= 8 because 3x = 3 * 8, and 3*8 = 24

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1