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Math Assignment Ch-11 Class X | Area Related to Plane Figures
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Math Assignment Class X : Chapter 11 : Area Related to Plane Figures like triangle, quadrilaterals and circle etc. Area of minor sector, major sector, minor segment , major segment, semi-circle, quadrants etc.
Question 1
Area of
sector of circle of radius 36 cm is 54Ï€ cm2 . Find the
length of the corresponding arc of the sector.
[Answer 3Ï€]
Question 2
The wheel
of the motorcycle is of radius 35 cm. How many revolutions per minute must the
wheel make so as to keep a speed a speed of 66 km/h
[Answer 500]
Question 3
A cow is
tied with a rope of length 14 cm at the corner of the rectangular field of
dimensions 20 cm X 16 cm. Find the area of the field in which the cow can graze
and in which the cow cannot graze.
Answer 166 cm2
Question 4
The
perimeter of the semi-circle is 72 cm. Find its diameter
[Answer 28 cm]
Question 5
A race track is in the form of a ring whose inner circumference is 440m and outer circumference is 506m. Find the width of the track and the area of the track
[Answer 10.5 cm, 4966.5 cm2]
[Answer 0.7m]
Question 7
Radius of the circle is 7 cm and angle of the sector is 120o. Find the area of the minor sector, major sector, minor segment, major segment.
Question 8
Find the
radius of the circle of a 40o arc has length 4Ï€ . Also
find the area of the sector formed by the arc.
[Answer 18 cm, 36Ï€ cm2]
Question 9
The
minute hand of a clock is 12 cm. Find the area swept by it between
a) 9am to
9:35am
b) 10 am
to 10:42 am)
[Answer a) 264 cm2]
Question 10
In a
circle of radius 21 cm and angle of sector is 60o find the
a) length
of arc, Ans 22cm
b) area
of sector, Ans 231cm2,
c) area
of segment, Ans 40.27 cm2
d) area of major segment
Question 11
If a
regular hexagon is inscribed in a circle of radius r cm. Then find its
perimeter and area.
Question 1 2
Diameter of semi-circular protractor is 14 cm find its perimeter.
[Answer 36 cm]
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