Question

19:376.8 in 2 b. Suppose a second vase has double the radius, but the same surface area. What is the height of the vase? 2T161117)+ Z716) ² (a=866.64 in? (C) Assessment Practice, 8. A welder is making a metal sphere. The radius will be 115 centimeters. What is the surface area of the metal sphere? Use 3.14 for . . 9. Thirty percent of the metal sphere from problem 8 will be covered in a metal that is tinted red. What is the area of the section of the sphere that is tinted red? About 166, 106 cm2 About 52,900 cm? © About 664,424 cm2 About 41,526.5 cm2 40r2 41(115) ² 166, 106 98 8-1 Find Surface Area of 3-Dimensional Figures Go Online PearsonRealize.com

Answer 1

87 Surface Area of sphere = 4002. = 4x 28 x 15) = 4 x 3.14 X 115x115 = 1669 106 cm2 ay 30% of means Area the surface area of sphere is tinted Red, 30% of 166106 is Red. that is tinted red = 30% of 166 106 30 X 166106 o 448318 = 498318 op 10 = 49831.8 cm² , ST