ICSE ICSE Class 8 - CISCE Question Bank Solutions

Solve `2/3` (x + 1) + 4 < 10 and represent its solution on a number line.
Given replacement set is {-8, -6, -4, 3, 6, 8, 12}.

For the following inequation, represent the solution on a number line : 

`5/2 - "2x" >= 1/2, "x" ∈ "W"`

For the following inequation, represent the solution on a number line : 

3(2x -1) ≥ 2(2x + 3), x ∈ Z

The edges of three solid cubes are 6 cm, 8 cm, and 10 cm. These cubes are melted and recast into a single cube. Find the edge of the resulting cube.

Three solid cubes of edges 6 cm, 10 cm, and x cm are melted to form a single cube of edge 12 cm, find the value of x.

The length of the diagonals of a cube is 8√3 cm.
Find its:
(i) edge
(ii) total surface area
(iii) Volume

The ratio between the lengths of the edges of two cubes is in the ratio 3: 2. Find the ratio between their:
(i) total surface area
(ii) volume.

For the following inequation, represent the solution on a number line : 

2(4 - 3x) ≤ 4(x - 5), x ∈ W

For the following inequation, represent the solution on a number line : 

4(3x + 1) > 2(4x - 1), x is a negative integer

For the following inequation, represent the solution on a number line : 

`(4 - "x")/2 < 3` , x ∈ R

For the following inequation, represent the solution on a number line : 

-2(x + 8) ≤ 8, x ∈ R

Calculate the sum of angle of a polygon with: 10 sides

Calculate the sum of angle of a polygon with: 12 sides

Calculate the sum of angle of a polygon with: 20 sides

Calculate the sum of angle of a polygon with : 25 sides

Find the number of sides in a polygon if the sum of its interior angle is: 900°

Find the number of sides in a polygon if the sum of its interior angle is: 1620°

Find the number of sides in a polygon if the sum of its interior angle is: 16 right-angles.

Find the number of sides in a polygon if the sum of its interior angle is: 32 right-angles.

Is it possible to have a polygon, whose sum of interior angle is: 870°