WILL MARK BRAINLIESTA candle in the shape of a cone has a slant height of 20 cm and a diameter that measures 18 cm. What is the surface area of the candle? (Use 3.14 for pi and round to the nearest hundredth. Recall the formula SA=pi rl + pi r^2.)536.94 cm^2819.54 cm^21,821.20 cm^22,147.76 cm^2
Accepted Solution
A:
Answer:819.54 cm^2Step-by-step explanation:We are givenSlant height = l = 20cmandDiameter = d = 18 cmWe have to find radius firstr = d/2 = 18/2 = 9 cmThe formula for surface area is:[tex]SA = \pi rl+\pi r^2\\= (3.14 * 9 * 20) + (3.14 * (9)^2)\\=565.5+254.34\\=819.84\ cm^2[/tex]As second option is nearest to calculated answer, it is the correct option ..