10 x 40 = 400 so the answer is 400 pieces of chalk.
Answer:
Given
Step-by-step explanation:
<A and <D are supplementary
Answer:
B. 1,900
Step-by-step explanation:
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➷ The formula to calculate the circumference is 
d is the diameter (double the radius)
Substitute the values in:
Circumference = (3.14)(3 x 2)
Circumference = 18.84
It would be option D. 18.84 m
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