the total surface area of a cone is 616 square CM if the slant height of the cone is 3 times the radius find its slant height
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TSA = πr(l+r)
616 = 22/7×r(3r+r)
616= 22/7×r×4r
616=22/7×4rsquare
616×7÷22×4 = rsquare
4312/88=rsquare
rsquare = 49
r = 7 cm
l = 3×r
l = 3×7
l = 21 cm
616 = 22/7×r(3r+r)
616= 22/7×r×4r
616=22/7×4rsquare
616×7÷22×4 = rsquare
4312/88=rsquare
rsquare = 49
r = 7 cm
l = 3×r
l = 3×7
l = 21 cm
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