The costs of a pack of noodles, a can of soda and a pack of bread buns are 120 Pesos, 45 Pesos, and 50 Pesos respectively. Brayd
1 answer:
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Answer:
If Length is decreased by 10% then it would become a square.
Step-by-step explanation:
Given:
Area of Rectangular field = 1440 sq. m
Perimeter = 152 m.
We need to find which one needs to be decreased by what percentage to make it a square.
Solution:
Let length be denoted by 'l'.
Also Let width be denoted by 'w'.
Now we know that Area of rectangular field is given by Length times width.
framing in equation form we get;
Also we know that Perimeter of rectangular field is given by 2 times sum of Length and width.
framing in equation form we get;
Now Substituting equation 2 in equation 1 we get;
Now we will find the root by factorizing the same we get;
Now solving for each to find the value of 'w' we get;
So We can say that;
Width = 36 m and Length = 40 m
Now we need to find out of length or breadth which one is to be decreased by what percentage to make it a square.
We know that square has all sides same.
So from the data we found we can say that if length is decreased by 4 then length and breadth(width) both will be equal.
So to find percentage decreased we will divide length to be decreased by total length and then multiply by 100.
framing in equation form we get;
percentage decreased =
Hence If Length is decreased by 10% then it would become a square.
Complete Question
When the Olympic Games were held outside Mexico City in 1968, there was much discussion about the effect the high altitude (7340 feet) would have on the athletes. Assuming air pressure decays exponentially by 0.5% every 100 feet, by what percentage is air pressure reduced by moving from sea level to Mexico City?
Round your answer to one decimal place.
....... %
Answer:
The value is
Step-by-step explanation:
From the question we are told that
The height of Mexico city is h = 7340 feet
The rate at which air pressure decays is 0.5% per 100 feet
From the data given
=>
=>