28 inches to centimeters
1 answer:
Answer:
71.12 cm
Step-by-step explanation:
There are 2.54 cm per inch, so your conversion is ...
(28 in)(2.54 cm/in) = 28×2.54 cm = 71.12 cm . . . (exactly)
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As with all units conversions, you multiply by a fraction whose value is 1. That is, the conversion factor has the same value in the numerator as in the denominator. You choose those values so the numerator has the units you want, and the denominator has the units you want to convert from. Here, that conversion factor is ...
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Each petal of the region 
is the intersection of two circles, both of diameter 10. Each petal in turn is twice the area of a circular segment bounded by a chord of length 
, which implies the segment is subtended by an angle of 
. This means the area of the segment is
This means the area of one petal is
, and the area of is four times this, or 
.
Meanwhile, the area of
is simply the area of the square minus the area of , or 
.
So
(provided these regions are indeed disjoint; it's hard to tell from the picture)
This means the area of one petal is
Meanwhile, the area of
So
