The simplest radical form is
Explanation:
The expression is
To determine the radical form, let us write the number 68 as a product of prime factors.
Thus, we have,
Since, 2, 17 are prime factors and hence, no further factorization is possible.
Hence, it can be written as,
Applying the radical rule , we have,
Simplifying, we have,
Thus, the simplest radical form is
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6 sec can take penny to strike the ground.
Solution:
Given data:
feet
feet
Re-arrange the terms from greatest degree to smallest degree.
We can solve it by applying quadratic formula,
Here a = –16, b = 48, c = 288
Now, write find two t's using plus and minus operation.
t = –3 (or) t = 6
We cannot write time is negative. so neglect t = –3.
Therefore t = 6.
Hence 6 sec can take penny to strike the ground.
Circles don't have volume, but they do have area.
The area of any circle is ...
(pi) x (the circle's radius)² .
The circle's radius is 1/2 of its diameter.
So for the circle in the question,
Radius = 30-ft
Area = (pi) x (900 square ft) = <em>2,827 square feet</em> (rounded)