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2 marks
T(n)=2T{n}2} + k.n where k is constant then T(n) is equal to
(A) O(n)
(B) O(n?
(C) O(logo)
(D) O(n logo
D
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Answers
Answer:
From the given photo, we can see there are 3 circles.
The biggest one with its radius: 2+2+2= 8 cm
The medium one with its radius: 2+2 = 4 cm
The smallest one with its radius: 2 cm
After that, we find the area of each circle with the following formula:
A = \pi \times {r}^{2}A=π×r
2
The area of the biggest circle is: π = 64π
The area of the medium circle is: π = 16π
The area of the smallest circle is: π = 4π
So the area of the shade part is:
The area of the medium circle - The area of the smallest circle
= 64π - 4π
= 60π
So the percentage of the logo is shaded blue:
= The area of the shaded blue / The area of the biggest circle
= 60π / 64π
= 0.9375
Answer:
The moral of the story: We should always own up to our actions, even if we’re afraid we might get in trouble.
In this story, David can’t ever seem to admit when he has done something wrong and instead has an excuse for everything. He finally realizes he feels much better when he tells the truth.
Where to buy: “David Gets In Trouble” ($9, Amazon)