Question

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Section B-Case study based question



Q18. A two-dimensional shape is a plane figure that
can be drawn on a flat surface with only two
dimensions- length and breadth with no
thickness or depth.
In the given figure, ABC is a quadrant of a circle
of radius 7 cm and a semi-circle is drawn with BC
as diameter. Answer the following questions:
(a) The diameter of the semi-circle will be: 116
(i) 14 cm
47 cm
fil zv7 cm
(iv) 1472 cm
(b) Perimeter of the quadrant from the figure is :
4 ma
121 cm
(ii) 28 cm
(iii)27 cm
(iv) 25 cm
(c) The length of semi-circular arc BC is :
(1) 1172 cm (ii) 11 cm
(iii)22 cm stiot ž272 cm
(d) Area of the segment formed between the diagonal BC and arc BC is :
(i) 14 cm2
(ii) 7 cm2
Viti
) 21 cm
(iv) 28 cm
(e) The area of shaded region will be:
(i) 28.5 cm
(ii) 14 cm?
II) 24.5 cm
(iv) 28 cm
Dag

Answer 1

Answer:

a) 14 cm

b) 1/4*2*22/7*7

1/4*11*2*2

=11cm + 7cm + 7cm

= 25 cm

c) since two quadrant make a semi circle

so 2* the perimeter of the arc (11 cm)

= 22 cm

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