Answer:radius = diameter/2=12/2=6cm...
area of semicircle = πr^2/2
={3.14×(2)^2}/2
=6.28cm^2.......
Step-by-step explanation:
Answer:

Step-by-step explanation:
We have:

For sine use:

Substitute:

θ in IV quadrant, therefore sine is negative.

For tangent use:

Substitute:

The answer is going to be C because you cannot take the square root of 3 and 13. Which means you cannot simplify the square root of 39 any further
The total number of elements is 2+2=4. Since we have 2 silver earrings, we get

the, the probability to get two silver earrings is 1/2, which is equivalent to 0.5.
78 inches because 4 + 2.5 = 6.5 and 6.5•12= 78