Answer:
The surface area of the figure is
Step-by-step explanation:
we know that
The surface area of the figure is equal to
where
B is the area of the L-shaped cross section
P is the perimeter of L-shaped cross section
H is the width of the figure
<em>Find the area of the L-shaped cross section</em>
<em>Find the perimeter P of L-shaped cross section</em>
substitute
is the quadratic equation with the solutions -4 and -6
Given that -4 and -6 are solutions of a quadratic equation and asked to find out the quadratic equation
If "a" and "b" are the roots of the quadratic equation then,
sum of roots = a+b
product of roots = ab
There the required quadratic equation is
Given that a= -4 and b= -6
sum of roots = a+b = -4 +(-6) = -10
product of roots = ab =( -4 )( -6 ) = 24
There the required quadratic equation is
Hence, is the quadratic equation with the solutions -4 and -6
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The probability of the union of two events is the sum of their probability, minus the probability of their interserction:
If we plug the known values into this formula, we have
From which we can deduce
So, the probability of is a bit less than
, we have to take away all events that belong to B as well:
