The area of a trapezium with equal non-parallel sides is 168 m2. If
the lengths of the parallel sides are 36 m and 20 m, find the length
of the non-parallel sides.
The walls and ceiling of a room are to be plastered. The length,
breadth and height of the room are 4.5 m, 3 m, and 350 cm
respectively. Find the cost of plastering at the rate of Rs 8 per m2.
Four horses are tethered with equal ropes at 4 corners of a square
field of side 70 metres so that they just can reach one another. Find
the area left ungrazed by the horses
The circumference of the front wheel of a cart is 3 m long and that
of the back wheel is 4 m long. What is the distance travelled by the
cart, when the front wheel makes five more revolutions than the rear
wheel?
In question, state whether the statement are true (T) or false (F).
Ratio of area of a circle to the area of a square whose side equals
radius of circle is 1 : π.
In question, state whether the statement are true (T) or false (F).
The surface area of a cube formed by cutting a cuboid of dimensions
2 × 1 × 1 in 2 equal parts is 2 sq. units.
Anaerobic bacteria digest animal waste and produce biogas (Change – A).
The biogas is then burnt as fuel (Change – B). The following
statements pertain to these changes. Choose the correct one.
(i) Process – A is a chemical change.
(ii) Process – B is a chemical change.
(iii) Both processes A and B are chemical changes.
(iv) None of these processes is a chemical change.
In question, state whether the statement are true (T) or false (F).
Two cylinders with equal volume will always have equal surface areas
In question, state whether the statement are true (T) or false (F).
A cube of side 3 cm painted on all its faces, when sliced into 1 cubic
centimetre cubes, will have exactly 1 cube with none of its faces
painted
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