1) "in terms of π" -- I know this is math, not English, but it helps if your question actually makes sense. Now recall that
A = πrl
l^2 = r^2 + h^2
Now plug in your numbers
2) the radius of the sector is the slant height of the cone (see l, above)
the arc length is the circumference of the base of the cone: πd
since s = rθ for a sector, you just need to solve
lθ = πd
so θ=πd/l
1) Find,in the term π the curved surface area of cone with circular base diameter 10cm and height 12cm
2)If the cone in question 1 is made of paper and the paper is flattened out into the sector of a circle, what is the angle of the sector
1 answer
2 answers