The ratio between the circumference and diameter of any circle is________ .

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: material/details.php

Line Number: 1002

()

π

The radius of a circle of diameter 24 cm is __________.

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: material/details.php

Line Number: 1002

()

12 cm

The three dimensions of a cuboid are _______, ___________ and _________.

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: material/details.php

Line Number: 1002

()

length, breath and height

The meeting point of more than two edges in a polyhedron is called as ______________

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: material/details.php

Line Number: 1002

()

Vertex

The cross section of a solid cylinder is _______.

A PHP Error was encountered

Severity: Warning

Message: A non-numeric value encountered

Filename: material/details.php

Line Number: 1002

()

Circle

Area of a circle

(1)

\(\frac { 1 }{ 4 } { \pi r }^{ 2 }\)

Circumference of a circle

(2)

Triangular Prism

Area of a quadrant of a circle

(3)

\(2{ \pi r }^{ }\)

(4)

πr²

(5)

Cylinder

For the sectors with given measures, find the length of the arc, area and perimeter . (π = 3.14)
(i) central angle 45º, r = 16 cm
(ii) central angle 120º, d = 12.6 cm

Find the central angle of each of the sectors whose measures are given below. \(\left( \pi =\frac { 22 }{ 7 } \right) \)

S.No	area (A)	length of the arc (l)	radius (r)
(i)	462 cm2	-	21 cm
(iii)		44 m	35 m

Find the area of a sector whose length of the arc is 50 mm and radius is 14 mm.

The radius of a sector is 21cm and its central angle is 120°. Find perimeter of sector.

A circular shaped gymnasium ring of radius 35 cm is divided into 5 equal arcs shaded with different colours. Find the length of each of the arcs.

Four identical medals, each of diameter 7 cm are placed as shown in Figure. Find the area of the shaded region between the medals. \(\left(\pi=\frac{22}{7}\right)\).

Find the area of the blue shaded and the grey shaded part of the given Figure. (π = 3.14)