Download SA-2 SET –B SUBJECT- MATHS CLASS –VIII Cube and cube root

SA-2
SET –B
SUBJECT- MATHS
CLASS –VIII
Cube and cube root
Q1 The volume of a cubical box is 32.768 cu m. Find the length of a side of a
box?(3)
Q2 Find the cube root of 0.003375.
(3)
Q3 Find the cube root of the following
a) -2300X5290
b) 1331/4096
(4)
Linear equation in one variable
Q4 Solve (2x +1)/(3x-2) = 9/10
(3)
Q5 The numerator of a fraction is 4 less than the denominator. If 1 is added to
both its numerator and denominator, it become ½. Find the fraction. (3)
Q6 The sum of two numbers is 2490. If 6.5% of one number is equal to 8.5% of
other , find the numbers?
(4)
Direct and inverse variation
Q7 1000 soldiers in a fort had enough food for 20 days. But some soldiers were
transferred to another fort and the food lasted for 25 days. How many soldiers
were transferred?
(3)
Q8 A and B can polish the floors of a building in 25 days. A alone can do 1/3 of this
job in 15 days. In how many days can B alone polish the floors of the building? (3)
Q9 pipe A can fill an empty tank in 6 hours and pipe B in 8 hours. If both the pipes
are opened and after 2 hours pipe A is closed, How much time B will take to fill
the remaining tank? (4)
Understanding shapes
Q10 The exterior angle of a regular polygon is one-third of its interior angle. How
many sides has the polygon? (3)
Q11 Three angles of a quadrilateral are equal. Fourth angle is of measure 1500.
What is the measure of equal angles?
(3)
Q12 A quadrilateral has all its four angles of same measure. What is the
measure of the fourth angle? (3)
Representation of 3-D figures
Q13 Define the Euler’s formula
And find the edges of a polyhedron if it has 20 faces and 12 vertices.
(4)
Q14Define
a)
b)
Pentagonal Prism
Square Prism
(4)
Mensuration
Q15 A cuboid has total surface area of 40 sq m and its lateral surface area is 26 sq
m. Find the area of the base.
(3)
Q16 Two cubes each of 10 cm edge are joined end to end. Find the surface area of
the resulting cuboid.
(3)
Q17 The length of a hall is 20 m and width 16. The sum of the areas of the floor
and the flat roof is equal to the sum of the areas of the four walls. Find the height
and the volume of the hall. (4)
Intoduction to the graph
Q18 The maximum temperature on 10 day of June, 2002, in Delhi is given below
Date 1
2
3
4
Max. 40
41
39
40
Tem
Draw a ghaph for the above data
5
42
6
43
7
44
8
40
(4)
9
38
10
39