defective : working = 1/15 ( x20 ) 20/300
so the answer is 20 light bulbs
Okay...
1 * 45
3 * 15
5 * 9
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Answer:
The formula for the area of a circle is:


1) Multiply pi by the radius squared
A scalar is an element of a field which is used to define a vector space. A quantity described by multiple scalars, such as having both direction and magnitude, is called a vector.