Pls help me with this
2 answers:
Answer:
The answer is C at 8.1.
Step-by-step explanation:
To find , start by finding the two consecutive perfect squares that 66 lies between them. The two perfect squares are 64 (
) and 81 (
). So, the whole number part of the square root of 66 will be 8.
Now, for the decimal part, use the following formula:
(Given number - Smaller perfect square) / (Greater perfect square - Smaller perfect square)
Then, put in the known information, which will look like:
(66 - 64)/(81 - 64) = 2/17 = 0.117
Finally, is 8.117, so the answer is C at 8.1.
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Answer:
Step-by-step explanation:
This may appear problem of geometry but can be simply solved using concept of ratio.
Since circle is uniform figure , hence area is uniformly distributed over the circle. Hence , area will be equally distributed for each angle of circle.
Given
sector with 120 degree angle has area
to get area covered by unit angle we divide both angle and area by 120
sector 120/120 degree angle has area
sector with 1 degree has area
We know that total angle for a circle is 360 degree.
Hence, area for circle will be 360 times multiplied the area of sector with 1 degree has area of same circle
Thus area of circle =