Me with this question. i have a test in one hour.

30.57

Step-by-step explanation:

Start out by finding the area of the circle. A=πr²

  So we need to try to find the radius. The radius is half of the diameter. The box is shown to have a length of 8 cm and a height of 6 cm. The radius of the circle is 5. So the area of the entire circle is Area= 3.14 times 5² to the second power.

  Which means the area of the entire circle = 78.54

Now we take the area of the un-shaded box and subtract that from the area of the circle. To find the area of the box, we use A=wl Or, area equals width times length. The with of the box is 6, and the length is 8. Making the area of the box 48.

 Now we subtract 48 from 78.54. Which equals 30.4. This is all rounded, un-rounded it equals 30.57.

answer: standard form is ax^2 + bx + c = 0

step-by-step explanation:

standard form is ax^2 + bx + c = 0

(2x + 1)(x - 2) = 0

distribute to get into standard form

2x^2 - 4x + x - 2 = 0

2x^2 - 3x - 2 = 0

a = 2, b= -3, c = -2

a is your answer