MEDIUM
8th CBSE
IMPORTANT
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The shape of the top surface of a table is a trapezium. Find its area of if its parallel sides are 1 m and 1.2 m and perpendicular distance between them is 0.8 m

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Important Questions on Mensuration-I (Plane Figures)

HARD
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 17 - Mensuration-I (Plane Figures)>SOME NCERT TEXTBOOK QUESTIONS>Q 4
The floor of a building consist of 3000 tiles which are rhombus shaped and each of its diagonals are 45 cm and 30 cm in length. Find the total cost of polishing the floor, if the cost per m2 is ₹ 4.
EASY
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 17 - Mensuration-I (Plane Figures)>EXEMPLAR PROBLEMS>Q 1
What is the area of the largest triangle that can be fitted into a rectangle of length l units and width w units?
MEDIUM
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 17 - Mensuration-I (Plane Figures)>EXEMPLAR PROBLEMS>Q 2
Area of quadrialateral ABCD is 20 cm2 and perpendiculars on BD from opposite vertices are 1 cm and 1.5 cm. The length od BD is:
MEDIUM
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 17 - Mensuration-I (Plane Figures)>EXEMPLAR PROBLEMS>Q 3
If the diagonals of a rhombus get doubled, then the area of the rhombus becomes _____ times its original area.
MEDIUM
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 17 - Mensuration-I (Plane Figures)>EXEMPLAR PROBLEMS>Q 4
The area of a trapezium becomes 4 times if its height gets doubled.
HARD
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 17 - Mensuration-I (Plane Figures)>EXEMPLAR PROBLEMS>Q 5
The area of a rectangular field is 48 m2 and one of its sides is 6 m. How long will a lady take to cross the field diagonally at the rate of 20 m/min?
HARD
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 17 - Mensuration-I (Plane Figures)>EXEMPLAR PROBLEMS>Q 6
Four horses are tethered with equal ropes at 4 corners of a square field of side 70 m so that they just can reach one another. Find the area left ungrazed by the horses.
HARD
8th CBSE
IMPORTANT
START UP MATHEMATICS>Chapter 17 - Mensuration-I (Plane Figures)>EXEMPLAR PROBLEMS>Q 7
The area of 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.