Heavenleigh302
26.05.2020 •
Mathematics
Semi circle M has a radius of 15 inches. If an ant walks from A to B directly along diameter AB and a beetle walks from A to B around ACB, how much farther, to the nearest tenth of an inch, does the beetle walk?
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Ответ:
The beetle walks 17.1 inches longer than the ant.
Step-by-step explanation:
The radius of semicircle M is 15 inches, so its diameter (double the radius) is 30 inches.
The ant walks 30 inches.
The circumference of semicircle M is π multiplied by the diameter.
However, because M is a semicircle and not a circle, divide the circumference equation by 2 (because only half the circumference is there.)
The diameter is 30 inches.
= 47.1238898038
Rounded to the nearest tenth of an inch, the "circumference" of semicircle M is 47.1 inches.
47.1 - 30
The beetle walks 17.1 inches longer than the ant.
Ответ:
I think elimination method will the the beat and easiest method we can use in that question,