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1 answer:
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Answer:
Step-by-step explanation:
Given that:-
The speed of the orion= 20,000 miles per hour
Time = 1 hour ( From source )
Thus,
Distance = Speed * Time = 20,000*1 miles = 20,000 miles
Thus, in 1 hour, the orion can travel 20,000 miles
Also,
93,000,000 miles = 1 astronomical unit
1 mile = 1/93,000,000 astronomical unit
20,000 miles = (1/93,000,000)*20,000 astronomical unit
<u>The orion can travel AU in one hour.</u>
Answer:
length = 60 foot, width = 30 foot
Step-by-step explanation:
Area of rectangular part, A = 1800 ft²
Cost of fencing three sides is $ 6 per foot and cost of one side fencing is $18 per foot.
Let the length of the rectangle is l and the width of the rectangle is W.
Area = Length x width
A = L x W
1800 = L x W ...... (1)
Total cost of fencing, C = 6 x ( L + W + L) + 18 x W
C = 6 (2L + W) + 18 W
C = 12 L + 24 W
Substitute the value of W from equation (1), in equation (2)
Differentiate both sides with respect to L:
Put it equal to zero for maxima and minima
L = 60 foot
and W = 30 foot
So, the costing is minimum for length = 60 foot and the width = 30 foot.