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memelord4206969
24.01.2021 •
Mathematics
Pick the correct options :) sorry if it's hard...
1. Radius is .
Options:
a. a chord
b. twice the diameter
c. a part of an arc
d. half of diameter
2.the distance between the center and any point on the circle is called its .
Options:
a. circumference
b. diameter
c. chord
d. radius
3. The diameter of a circle whose radius is 7cm is .
Options:
a. 21 cm
b. 44 cm
c. 3.5 cm
d. 14 cm
4. A dot (.) represents a .
Options:
a. line segment
b.line
c. ray
d. point
Solved
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Ответ:
2. D
3. D
4. D
it’s all D
Ответ:
We'll need the area of the purple square. This square is 1.5 inches by 1.5 inches. This is because 4 - 2.5 = 1.5
So the purple square has an area of 1.5*1.5 = 2.25 square inches
Divide this over the total area of the largest square (which is 9x9) to get 2.25/81 = 0.02777... where the 7's go on forever
Round that to two decimal places. The final answer is 0.03
Side note: 2.25/81 is equivalent to the reduced fraction 1/36 (express 2.25/81 as 225/8100 and then divide both parts by the GCF 225)