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natima [27]
2 years ago
9

How do I draw a 50 degree angle ?

Mathematics
1 answer:
olga55 [171]2 years ago
6 0
<h2>Answer :-</h2>

To draw a 50 degree angle with a protactor, proceed as follows :

  • Draw a straight line (i.e. an arm of the angle).

  • Place a dot at one end of the arm. This dot represents the vertex of the angle.

  • Place the centre of the protractor at the vertex dot and the baseline of the protractor along the arm of the angle.

  • Find 50 degree angle on the scale and then mark a small dot at the edge of the protractor.

  • Join the small dot to the vertex with a ruler to form the second arm of the angle.

  • Label the angle with capital letters.

Remember that 50 degree angle cannot be constructed using compass.

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Given Information:  

Area of rectangle = 16 square feet

Required Information:  

Least amount of material = ?

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x = 4 ft and y = 4 ft

Step-by-step explanation:

We know that a rectangle has area = xy and perimeter = 2x + 2y

We want to use least amount of material to design the sandbox which means we want to minimize the perimeter which can be done by taking the derivative of perimeter and then setting it equal to 0.

So we have

xy = 16  

y = 16/x

p = 2x + 2y

put the value of y into the equation of perimeter

p = 2x + 2(16/x)

p = 2x + 32/x

Take derivative with respect to x

d/dt (2x + 32/x)

2 - 32/x²

set the derivative equal to zero to minimize the perimeter

2 - 32/x² = 0

32/x² = 2

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Verification:

xy = 16

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