Which mental math strategy can be used to find the exact sum of 873 and 47? Check all that apply?
1 answer:
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Answer:
Step-by-step explanation:
Area of Circle can be calculated using following formula
Where r is radius of circle
<u>Area of outer circle (r=11 yd)</u>
<u>Area of inner circle (r=8 yd)</u>
Area of shaded region
Answer:
Step-by-step explanation:
The golden ratio is a special number favored by the Greeks. Its ratio roughly equals 1.618. The ratio is formed by taking a line segment and dividing it into two parts labeled a and b. The golden ratio is formed when this proportion is true .
When you add a and b then divide by a, it will be the same as a divided by b. This will hold true only for specific lengths of a and b. This means you must divide the line segment in such a way that a and b meet this requirement.
Example:
If the line segment is 50 cm long. Split the segment into parts a and b where a = 30.9 and b = 19.1. Substitute the values into the proportion .
1.618 = 1.618
This is the golden ratio.