Volume of the cone = 1/3 pi * 3^2 * 4 = 12pi Volume of the hemisphere = 4/3 pi 3^3 * 1/2 = 18pi So the volume of the toy = 12pi + 18pi = 30pi = 94.25 cm^3 to nearest hundredth Answer
Surface area of hemisphere = 1/2 * 4 pi 3^2 = 18pi Lateral Surface area of the cone = pi r l where l = slant height of the cone Now l= sqrt ( 4^2 + 3^2) = sqrt25 = 5 So lateral S A = 3 * 5 * pi = 15pi
Surface area of the toy = 18pi + 15pi = 33pi = 103.67 cm^2 ( nearest hundredth) Answer
Tina said that 6:8 is equal to 36:64. It's wrong. It should be 48:64. Because just like a fraction, whatever you multiply in the bottom, you do to the top.
