Skip to content
Philoid
Browse Saved
Back to chapter
Mathematics
18. Area of Circular Region
Home · Class 9 · Mathematics · Ref. Book · 18. Area of Circular Region
Prev
Next
Q5 of 35 Page 311

Faruk will draw a circle of which area will be 616 sq. meter. Let us see by calculating what length of radius Faruk will take to draw a circle and what perimeter he will get.

Given, area of circle = 616 m2


But, Area = πr2, where r is the radius of circle


⇒πr2 = 616



⇒ r2 = 196


⇒ r = 14 m


Perimeter of circle = 2π r, where r is the radius of circle


⇒


⇒ 88m


More from this chapter

All 35 →
3

Grandmother of Rekha was made a circular table cover of which area 5544 sq.cm. She wants to paste coloring tape surrounding this circular cover of the table, let us see by calculating how long coloring tape she will buy.

4

The cost of fencing of our village play ground with railing is Rs. 924 at the rate of Rs. 21 per meter. Let us write by calculating how much sq. meter canvas will be bought for covering the field.

6

Palash and Piyali have drawn two circles the ratio of which length of radius is 4:5. Let us write by calculating the ratio of the area of two circular fields drawn by them.

7

Sumit and Reba have taken two cupper wire having same length. Sumit bent the wire in the form of a rectangular shape of which length and breadth are 48 cm. and 40 cm. But Reba bent the copper wire with same length in the form of a circle. Let us see by calculating which will cover maximum place between the rectangle drawn by Sumit and circle drawn by Reba.

Questions · 35
18. Area of Circular Region
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 26 26 26 26 27 27 27 27 27
Back to chapter
ADVERTISEMENT
About Contact Privacy Terms
Philoid · 2026
  • Home
  • Search
  • Browse
  • Quiz
  • Saved