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4 years ago

If the length of the rectangle five times its width and the perimeter of the rectangle is 30 cm find its area

Mathematics

1 answer:

Lilit [14]4 years ago

8 0

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Pzionts

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The end of a house has the shape of a square surmounted by an equilateral triangle. If the length of the base is measured to be

sergij07 [2.7K]

Answer:

The area of the end is 1755.44 ft²

Therefore, the maximum error in calculating area of the end is 8.3592

Step-by-step explanation:

Consider the provided information.

The length of the base is measured to be 35 feet, with a maximum error in measurement of 1 inch,

$1\ inch = \frac{1}{12}\ feet$

The area of shape = Area of square + Area of equilateral triangle

$A=x^2+\frac{\sqrt{3}}{4}x^2$

Substitute x=35 in above.

$A=(35)^2+\frac{\sqrt{3}}{2}\times (35)^2=1755.44$

Hence, the area of the end is 1755.44 ft²

Differentiate $A=x^2(1+\frac{\sqrt{3}}{4})$ with respect to x as shown:

$dA=2x\ dx(1+\frac{\sqrt{3}}{4})$

Substitute dx =1/12 and x=35

$dA=2(35)\ \frac{1}{12}(1+\frac{\sqrt{3}}{4})=8.3592$

Therefore, the maximum error in calculating area of the end is 8.3592

6 0

3 years ago

Help please quick!!!

mina [271]

Answer:

just multiply two numbers on the rombus and you have your answer

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3 years ago

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evablogger [386]

Answer:

all work is shown and pictured

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4 years ago

Bella saw that 7 out of 11 people brought an umbrella to the beach. There were 99 people there. How many of them did NOT have a

Leokris [45]

That means that 4 out of 11 people did not have umbrellas
You can write this as a fraction so
4/11 = x/99
Then, multiply both sides by 99 to isolate the variable.
So x is going to equal 99 times 4 divided by 11, which is 36. That means 36 people did not have umbrellas.

8 0

3 years ago

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Distribute expression -(5-b)

Sergio [31]

Answer:

-5+b or b-5

Step-by-step explanation:

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3 years ago