The part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations.
Answer:
r= 15
Step-by-step explanation:
There are 2 ways of measuring angle. It is either by radians or by degree. Radians is unitless or we just call it rad. A pi is equivalent to 180 degrees. A pi is equal to 3.14. So when we answer this we multiply 216 by pi/180 or 2pi/360. The answer is 3.7699 or 3.8 rad.
Answer:
I think No
Explanation:
We say two figures are similar if they have the same shape, but not necessarily the same size. <u>If they also have the same size</u>, we say they are congruent.
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