gray4675
22.05.2021 •
Mathematics
Idhi has cut out a semi-circular piece from a plastic sheet and divided it into 8 equal parts as shown: She wants to use this to measure angles. Which of the following angles will she be able to measure accurately using this semi-circular piece?
a. 30⁰
b. 45⁰
c. 60⁰
d. 100⁰
Solved
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Ответ:
Step-by-step explanation:
Given
A semicircle divided into 8 parts
Required
Angle that can be measured with the piece
First, we calculate the minimum angle that can be calculated.
So, we have:
This implies that all angles that can be measured using the piece must be a multiple of 22.5 not greater than 180 degrees (i.e. not greater than the semicircle)
So, we have:
From the list of options, only 45 degrees appear in the possible values of
Hence:
Ответ:
next time, can you explain what its about
Step-by-step explanation:
having a little bit of trouble