Always, i think it’s the answer
The volume is given as V = Lwh = 20 m^3.
Since the base is a square then V = L²h = 20 m^3
Rearranging, we have L = √(20/h).
For the metal frame:
8√(20/h) + 4h ==> [8 is multiplied to √(20/h) because there are 8 sides measuring L, and 4 is multiplied to h because there are 4 sides that have measure h.]
9[8√(20/h) + 4h]
=72√(20/h) + 36h = Cost of metal frame
For the glass:
Area of one square base = L² = 20/h
Area of one rectangular side = h√(20/h)
Area of 4 rectangular sides = 4h√(20/h)
10[20/h + 4h√(20/h)] = Cost of glass
C = 72√(20/h) + 36h + 10[20/h + 4h√(20/h)]
(take note, we did not multiply 10 to the terms because 10 dollars is per unit area and not unit length.)
Answer:
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Answer:
2 1/4 times
Step-by-step explanation:
A builder was building a fence. In the moring he worked 2/5 of an hour. In the afternoon he wirked for 9/10 of an hour. how many times as long in the morning did he work in the afternoon
Note that:
1 hour = 60 minutes
In the moring he worked 2/5 of an hour.
= 2/5 × 60 minutes
= 24 minutes
In the afternoon he worked for 9/10 of an hour
Hence:
9/10 × 60 minutes
= 54 minutes
How many times as long in the morning did he work in the afternoon?
This is calculated as number of minutes worked in the afternoon ÷ Number of minutes worked in the morning
= 54 minutes/24 minutes
= 2 6/24
= 2 1/4 times
13+49=62.
12+50=62
the answer is 50.
