The largest possible error in the area of the circle is of 44%.
<h3>What is the area of a circle?</h3>
The area of a circle of radius r is given by:
With a diameter of 20 cm = radius of 10 cm, the area in cm² is given by:
With the error, with a diameter of 20 x 1.2 = 24 cm = radius of 12 cm, the area in cm² is given by:
The error is given by:
The percent error is the error divided by the initial amount, multiplied by 100%, hence:
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First, find the GCF, or greatest common factor of 56 and 64.
The GCF of 56 and 64 is 8, because 8 is the square root of 64, and also goes into 56.
56 + 64 = 120
Now, you simply find any sum that, when multiplied by 8, is equal to 120.
The easiest way is to divide 120 by 8 and make a sum of the quotient.
120 ÷ 8 = 15
Therefore, any two factors of fifteen, multiplied by 8, will be your answer.
8 × (1+14)
8 × (2+13)
8 × (3+12)
8 × (4+11)
8 × (5+10)
8 × (6+9)
8 × (7+8)
Any of the seven equations above are correct.
Answer:
Step-by-step explanation:
Answer:
3 hours
Step-by-step explanation:
Substitute x = 12 into the equation
y = 0.25 × 12 = 3
The 12 pound roast takes 3 hours to cook