Question

what is the ratio of the base-radius and sland hieght of a cone made by rolling up a semicircle?​

Answer 1

Step-by-step explanation:

If we roll the semi circle in shape of a cone then slant height will become radius of semi circle and and diameter of semi circle will become circumference of base of cone

so let radius of semi circle be r and slant height of cone be l

so r=l

Now diameter of semi circle is 2r and circumference of base of cone is 2pie R

so 4r=2pie R

R=2r upon pie

so ratio is

2r/pie upon r

2:pie

Answer 2

Answer:

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