Exercise 1.1c
A. Fill
in the blanks.
1. All the radii of a circle are Equal.
2. The Diameter is the longest chord of a circle.
3. A line segment joining any point
on the circle to its center is called a Radius of the circle.
4. A line segment with its end points
on the circle is called a Chord.
5. Twice the radius is Diameter.
B. Find the diameter of the circle.
1. Radius
= 10cm
Radius = 10 cm
Diameter = 2 x radius
= 2 x 10 = 20 cm
Diameter = 20 cm
2. Radius
= 8cm
Radius = 8 cm
Diameter = 2 x radius
= 2 x 8 = 16 cm
Diameter = 16 cm
3. Radius
= 6cm
Radius = 6 cm
Diameter = 2 x radius
= 2 x 6 = 12 cm
Diameter = 12 cm
C. Find
the radius of the circle.
1. Diameter
= 24 cm
Radius = diameter / 2
= 24 / 2 = 12 cm
Radius = 12 cm
2. Diameter
= 30 cm
Radius = diameter / 2
= 30 / 2 = 15 cm
Radius = 15 cm
3. Diameter
= 76 cm
Radius = diameter / 2
= 76 / 2 = 38 cm
Radius = 38 cm
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