Question

cone has slant height 20 cm and height 16 cm. Find its radius of base

Answer 1

Using the formula

l=r2+h2

Solving forr

r=l2﹣h2=202﹣162=12cm

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Answer 2

Answer:

12 cm

Step-by-step explanation:

l^2 = h^2 + r^2

20^2 = 16^2 + r^2

400 = 256 + r^2

400-256 = r^2

r^2 = 144

r = root 144

r = 12 cm