Rakhi is made with silver wire in the form of a circle with 28mm the wire
used for making 4diameters which divide the circle into 8equal parts
Q=the total length of wire required is (a) 180Mm b) 200mm c) 250mm d) 280mm
Answers
Answer:
Answer the following Design-A: Brooch A is made with silver wire in the form of circle with diameter 28mm.
The wire used for making 4 diameters which divide the circle into 8 equal sectors.
Design-B : Brooch B is made in two colours-Gold and Silver. Outer part is made with
gold. The circumference of silver part is 44mm and the Gold part is 3mm wide
everywhere.
Refer to design-A
i) The total length of the silver wire required is
a) 180mm b) 200mm c) 250mm d) 280mm
ii) The area of each sector of the brooch is
a) 44mm2
b) 52mm2
c) 77mm2
d) 68mm2
Refer to design-B
iii) The circumference of outer part (Golden) is
a) 48.49mm b) 82.22mm c) 72.50mm d) 62.86mm
iv) The difference of areas of Golden and Silver parts is
a) 18π b) 44π c) 51π d) 64π
v) A boy is playing with the brooch B. He makes revolution with it along its edge. How
many complete revolutions must it take to cover 80π mm.
a) 2 b) 3 c) 4 d)