Page 172 - Maths Skills - 8

Large Numbersarge NumbersMensurationMensuration
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Learning Outcomes

In this chapter, you will learn about:
� Area of different figures � Surface area of a cuboid and cube � Right circular cylinder
� Solids � Volume of cuboid and cube � Surface area and volume of cylinder

Boot-Up (To Recapitulate Previous Knowledge of Concepts)

COMPETENCY BASED QUESTIONS

A. Multiple-Choice Questions

1. The length and breadth of a rectangular field are 15 m and 5 m respectively. What is its perimeter?
(i) 20 m (ii) 40 m (iii) 10 m (iv) None of these

2. What will be the perimeter of a square with side 20 m?
(i) 40 m (ii) 50 m (iii) 60 m (iv) 80 m
3. A square with area 100 sq m will have a perimeter of _______.

(i) 20 m (ii) 30 m (iii) 40 m (iv) 50 m

B. Fill in the Blanks
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1. The area of a ______________ is × Base × Height.
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2. The distance around a circle is known as its ______________.

3. 1 hectare = ______________ m .
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4. Area of a ______________ = Base × Height

C. Write ‘T’ for true and ‘F’ for false Statements

1. All triangles equal in area are congruent.

2. Perimeter of a regular polygon is equal to the product of the length of
its side and the number of sides

3. To find the cost tiling a floor, we need to find the perimeter of the floor.

4. The perimeter of a circle with radius r will be π r.