10./A silver brooch is in the shape as shown in the figure. It involves four parallelograms two of which are of one size and other two are of other size. If the base and height of bigger parallelograms are 2.5 cm and 1 cm and that of smaller parallelogram are 1.5 cm and 0.7 cm, find the cost of polishing it at the rate of ₹50 per cm.
Attachments:
Answers
Answered by
0
Answer:
plz mark me as brainliest
Answered by
2
Answer:
Diameter =35mm
∴ Circumference of circle
=2×π×r =2×π×17.5=110mm
i) The total length of the silver wire required
= Circumference of circle + (5×35)
=110+175 = 285mm
(ii) The area of each sector of the brooch
=
10
Area of circle
=
10
π×17.5×17.5
=
4
385
mm
2
Similar questions