8 cubic cm equal to 8 milliliters. It does not equal 2.5 mm.
Answer:
<h2>
41.34</h2>
Step-by-step explanation: Can I have Brain plz?
To ease the understanding, let's write it in degrees and not in Radian:
Formula of conversion: Degree°/180 = Radian/π
Convert 7π/4 in degrees: = (7x180)/4 = 315°
This angle is in the IV th Quadrant of the UNIT circle. So you can write 315° or - 45° .
sin(7π/4) = sin(315°) = sin( - 45°) = - sin(45°) = - (√2)/2
The area of trapezoid ABCD is
... Area = (1/2)·(BC +AD)·(BF)
We can fill in the given information and solve for the remaining variable.
... 30 = (1/2)(6 + AD)(4) = 12 + 2·AD
... 18 = 2·AD . . . . . subtract 12
... 9 = AD . . . . . . . divide by 2
Since AB || CE, the lengths BC and AE are equal; both are 6. So, we have
... AE + ED = AD
... ED = AD - AE = 9 - 6
... ED = 3 . . . . . corresponds to selection (A)