4. A jar of peanut butter has a cylindrical top that is 4 inches in diameter. What is the area of this top?

12.56

Step-by-step explanation:

A= pie x radius squared(to the second power, because it is diameter)

A= 3.14 x 4

A= 12.56

hope this helps!

A = π × 4 or if you want to substitute pi for 3.14, A = 12.56

Step-by-step explanation:

The area of a circle is A = π × r²

We substitute the of r with 2 (because the radius, r, is half of the circumference)

Next, we square 2, which is equal to 4.

Now, we can substitute π with 3.14 (if that's what the question is asking you to do).

We multiply 4 by 3.14 and get 12.56.

The area, A, is equal to 12.56 in².

Hope this helps!

18.8 cubic inches.

step-by-step explanation:

volume of a cone = πr²h

r = 1.5 inches

h = 8 inches

pi = 3.14

volume of our cone = × 3.14 × 1.5² × 8 = 18.84 square inches

or equals to 18.8 square inches rounded up to nearest tenth.

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.