A girl is half as old as her sister and is also two years younger than her brother. If the sum of the three children's ages is $
1 answer:
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The given triangle is a right angled triangle,
so let's apply trigonometry here :
Now,
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ANSWER
The radius is 8
EXPLANATION
We were given,
We rewrite the above equation to obtain,
We now add half the square of the coefficient of
to both sides of the equation to get,
We now got two perfect squares on the left hand side of the equation,
By comparing to the general formula of the circle,
We can see that the radius is 8.
The radius is 8
EXPLANATION
We were given,
We rewrite the above equation to obtain,
We now add half the square of the coefficient of
to both sides of the equation to get,
We now got two perfect squares on the left hand side of the equation,
By comparing to the general formula of the circle,
We can see that the radius is 8.