To find the area of a circle, use the following formula; A = πr^2
The radius of a circle is half the diameter.
So;
4.) 18/2 = 9
Radius = 9
(3.14)9^2
9(9) = 81(3.14)
254.34 is the area of figure #4.
5.) 12/2 = 6
A = (3.14)(6)^2
A = (3.14)(36)
113.04(2) Because there are two pizzas.
226.08
Number 4 gives the most amount of pizza. So, one 18 in. pizza.
Answer:
8
4 --
11
Step-by-step explanation:
The gear ratio for the original gear system was 4/22. To get the 22 inch wheel to 26 inches, you have to multiply it by 26/22, so to keep the same ratio, you will also need to multiply 4 by 26/22. You get 104/22, which simplifies to 52/11 which simplified further to 4+8/11. You can check your answer by comparing the original ratio to the new ratio.
Answer:
Step-by-step explanation:
We are given:
And we want to solve for <em>x</em>.
First, we can add 49 to both sides:
Now, we can take the square root of both sides. Since we are taking an even root, we will need plus-minus. Hence:
Evaluate:
Subtract 7 from both sides:
So, we have two solutions:
Evaluate:
So, from least to greatest, our solutions are:
Answer:
x = square root of 23 i, x = - square root 23 i,
Step-by-step explanation: x^2+12=-11
Subtract 12 from both sides
x^2+12 - 12 = -11 - 12
Simplify
x^2 = -23
For x^2 = f(a) the solution are x = square root of F(a), - square root of f(a)
x = square root of - 23, x = - square root of -23
Simplify square root of -23: square root of 23
square root of 24
Apply radical rule: sqaure root of -a = square root of -1 square root of a
square root of -23 = square root of -1 square root of 23
= square root of -1 square root of 23
Apply imaginary number rule: square root of -1 = i
= square root of 23i
Simplify - square root of -23 square root of 23
-square root of -23
Simplify square root of-23 square root of 23i
= - square root of23i
x = square root of 23i, x = - square root of 23i
76.5i=X cm
1inch=2.5
75.5 times 2.5= 188.75 cm
