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the frame of lampshade is to be covered with a decorative cloth. the frame has a base diameter =20 CM and height=30cm .a margin of

By Sadie

the frame of lampshade is to be covered with a decorative cloth. the frame has a base diameter =20 CM and height=30cm .a margin of 2.5cm is to be given for folding over the top and bottom of the frame. find how much cloth is required for covering the lampshade ​

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Sadie

dy
Find
dx
if y=x*
a)x*(1 + logr) b)x” (1-logr) c)(1+logr) (1 – logu)
a)
b)
O
c)
d)​

if you were a tree , what would you say to a fellow tree ? Why? Explain with reference to the poem ‘On Killing A Tree’.​

2 thoughts on “the frame of lampshade is to be covered with a decorative cloth. the frame has a base diameter =20 CM and height=30cm .a margin of”

  1. Correct option is

    D

    2200 cm

    2

    Diameter of the base of lampshade, d = 20 cm

    radius r =

    2

    d

    =

    2

    20

    cm ;

    height = 30 cm

    Margin over the top and bottom = 2.5 cm + 2.5 cm = 5 cm

    Hence total length of the cloth used

    h = 30 cm + 5 cm

    h = 35 cm

    The cloth required for covering the lampshade = 2πrh = 2 X

    7

    22

    X 10 X 35 = 2200 cm

    2

    Reply

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