Question

Part B

Which sets of measurements could be the side lengths of a triangle?
Select each correct answer.
A 5 cm, 9 cm, 14 cm
B a 7 cm, 7 cm, 10 cm
c6 cm, 7 cm, 8 cm
D 3 cm, 3 cm, 3 cm
E4 cm, 8 cm, 13 cm

Answer 1

1. Volume of a cone: 1. V = (1/3)πr2h 2. Slant height of a cone: 1. s = √(r2 + h2) 3. Lateral surface area of a cone: 1. L = πrs = πr√(r2 + h2) 4. Base surface area of a cone (a circle): 1. B = πr2 5. Total surface area of a cone: 1. A = L + B = πrs + πr2 = πr(s + r) = πr(r + √(r2 + h2))

Explanation:

7