Question

curved surface area of cone is 550cm²and its diameter is 1
4cm. what is its height?​

Answer 1

Answer:

24 cm

Step-by-step explanation:

Diameter = 4 cm

Radius = 14 ÷ 2 = 7 cm

Find the slanted height:

Curved surface area = πrl

π(7)l = 550 cm²

l =550 ÷ 7π

l = 25 cm

Find the height:

a² + b² = c²

7² + b² = 25²

b² = 25² - 7²

b² = 576

b = √575

b = 24 cm

Answer 2

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