• Answer of this question

    The surface area of a sphere is 5544cm. Find its volume
    Davneet Singh's image
    Davneet Singh

    Hi Harsh

    Surface Area of Sphere = 5544 

    4πr2 = 5544

    πr2 = 5544/4

    πr2 = 1386

    (22/7)r2 = 1386

    r2 = 1386 × (7/22)

    r2 = (1386/22) × 7

    r2 = 63 × 7

    r2 = 9 × 7 × 7

    r2 = 9 × 72

    r2 = 32 × 72

    r2 = (3 × 7)2

    r2 = 212

    r = 21 cm

     

    Now,

    Volume of Sphere = 4/3πr3

    Volume of Sphere = 4/3 × (22/7) × (21)3

    Volume of Sphere = 38803 cm3

     

     

     

     

     


    Written on May 22, 2017, 9:20 p.m.