Question
Fig. 15.17, shows a sector of a circle, centre , containing an angle , prove that: (FIGURE) (i) Perimeter of the shaded region is (ii) Area of the shaded region is
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Question 1
Find the area of the shaded region in Fig. 12.22, where a circular arc of radius cm has been drawn with vertex O of an equilateral triangle OAB of side cm as centre .Question 2
In a circle of radius 21cm, an arc subtends an angle of at the centre. Find (i) the length of the arc (ii) area of the sector formed by the arc. Question 3
ABCD is a field in the shape of a trapezium. `A B||D C`
and `/_A B C=90^0,`
`/_D A B=60^0dot`
Four sectors are formed with centres `A ,B ,Ca n dD`
(See Figure). The radius of each sector is 17.6m. Find the
total area of the four sectors.
area of remaining portion given that `A B=75 ma n dC D=50 mdot`Question Text | Fig. 15.17, shows a sector of a circle, centre
, containing an angle
, prove that: (FIGURE)
(i) Perimeter of the shaded region is
(ii) Area of the shaded region is |