Circumference of circle = 2 pi r
= 2 x 3.14 x 6
= 6.28 x 6
= 37.68 cm
Area of circle = pi r^2
= 3.14 x 6^2
= 3.14 x 36
= 113.04 cm^2
The correct answer is D.
the total calorie intake mark wants is 510.
He takes 30 for side dish (30s) and 45 for entree (45e)
therefore 30s + 45e = 510
now that you have an equation, judging by the choice of answers given... you have to make s the subject of formula
30s + 45 e can be factorised to 15(2s+3e) = 510
divide 510 / 15 = 34
now we have 2s + 3e = 34
hence 2s = 34 - 3e
didvide by 2 to make s 'free'
therfore you'll get s = 17-(3/2)e
Hope this helps! :)
