
Introducing your new favourite teacher - Teachoo Black, at only βΉ83 per month
Last updated at Aug. 26, 2021 by Teachoo
Ex 13.7, 3 The height of a cone is 15 cm. If its volume is 1570 cm3, find the radius of the base. (Use Ο = 3.14) Height of cone = h = 15 cm Let radius of cone = r cm Given Volume of cone = 1570 cm3 1/3 Οr2h = 1570 1/3 Γ3.14Γπ2Γ15=1570 1 Γ3.14Γπ2Γ5=1570 r2 = 1570/(3.14Γ5) r2 = 100 r = β100 r = β((10)2) r = 10 cm