No 6,7 please solve

No 6,7 please solve —circle region When the raåius is cm. setnicirde if the radius is IS cm and also find the diameter of the a semicircular field, if its diameter is 20 cm. Also, find the area. p—ter and "meter ofa semicircle whose radius is 21 cm. path running around it on its outside. The garden B 32.ide Find the area of the path. cit:cuiar Bark is 84 m. A 3S m wide path runs around it On its inside. Find at I per sq. m. & to the area ofa rectangle with sides measuring 112 mand88m. And ciaHerence of the circle. A form ofa square, encloses an area of 484 crn2. Find: guare b hgth : bent rm a circle 42 cm. Find the distance travelled by it in SO revolutions.

(7).



Diameter of circular park = d = 84 mradius of circular park, R = d2 = 842 = 42 mNow, width of the path = 3.5 mSo, radius of inner circle = r = R - width of path = 42 - 3.5 = 38.5 marea of path = area of outer circle - area of inner circle=πR2 - πr2=πR2 - r2=227 × R+rR-r=22742 + 38.542 - 38.5=227 × 80.5 × 3.5= 885.5 m2Cost of paving 1 m2 area of path = Re 1Cost of paving 885.5 m2 area of path = Rs 885.50

Kindly ask the remaining query in different thread.

  • -1
0.0485 sq.metre
 
  • -2
What are you looking for?