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Queenvalentin
26.10.2019 •
Mathematics
Acircle has a diameter with endpoints at (10,8) and (5,-4) what is the circumference of the circle
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Ответ:
The circumference of circle is 40.82 units.
Explanation:
The end points of diameter lie on circle. since the coordinates of end points of diameter may be evaluated using
d=![\sqrt{(10-5)^ 2-(8-(-4))^ 2}](/tpl/images/0347/8281/2785b.png)
=![\sqrt{25+144}](/tpl/images/0347/8281/21977.png)
=![\sqrt{169}=13](/tpl/images/0347/8281/9951d.png)
therefore d = 13 .
The formulae of circumference comprises the length of radius of circle, hence find the radius as half of diameter length r=d/2 = 13/2 = 6.5 ; circumference of circle =![2\pi r](/tpl/images/0347/8281/ba846.png)
= 2x3.14xr
= 13x3.14 units.
=40.82 units
Ответ:
Step-by-step explanation:
CP=45
SP= 1.5 X 10,000/250
THEREFORE SP=60
PROFIT=15
PROFIT % =(PROFIT/CP) X 100
(15/45) X 100
=33.3%