Brian rolls 2 fair dice and adds the results from each. Work out the probability of getting a total that is prime. Answer THIS P
1 answer:
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Answer:
The radius of the circle is
Step-by-step explanation:
we know that
The circumference of a circle is equal to
In this problem we have
substitute and solve for r
Step-by-step explanation:
Volume of cylindrical container
Answer:
1π
Step-by-step explanation:
suppose the radius of semicircle P is r,
then the radius of semicircle Q = (r+d)/2 ... d≤r
radius of semicircle R = (r-d)/2
area P = 1/2 (r)²π
area Q = 1/2 ((r+d)/2)² π = 1/8 (r² + 2rd + d²)π
area R = 1/2 ((r-d)/2)² π = 1/8 (r² - 2rd + d²)π
shaded area = P-Q-R = 1/2 r²π - 1/4 (r² + d²)π
= ((r² - d²)/4) * π
because there is no constant r value in the question and d value changes with the r change, when the vertical segment length equal the semicircle P radius (r), r=2 and d = 0
therefore the shaded area = ((2² -0²)/4)*π = 1π
