Samantha leaves her house and drives 18 kilometers east to her friend's house. She then drives north to school. Finally, she dri
ves 30 kilometers directly home, in a straight line, from school. A map of Samantha's route is provided below.
How far does Samantha drive traveling from her friend's house to the school?
A.
42 kilometers
B.
12 kilometers
C.
35 kilometers
D.
24 kilometers
How far does Samantha drive traveling from her friend's house to the school?
A.
42 kilometers
B.
12 kilometers
C.
35 kilometers
D.
24 kilometers
2 answers:
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Answer:
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Step-by-step explanation:
The perimeter covered by the electric fence in meters is:
The area of the rectangle is:
Let differentiate the previous equation and equates to zero:
The critical point is:
By the Second Derivative Text, it is proved that critical point lead to a maximum:
The other side of the rectangle is:
The largest area than can be enclosed is:
The dimensions of the triangle are: