Page 166 - Maths Skills - 7

164 Maths

ASSESSMENT - 3

(For Chapters 7 to 9)

COMPETENCY BASED QUESTIONS
Multiple-Choice Questions
1. If the diameter of the circle is 14 cm, then the area of the circle is:

(a) 606 sq. cm (b) 88 sq. cm (c) 44 sq. cm (d) 154 sq. cm
2. The coefficient of x in –10xyz is:

(a) 10 (b) –10 (c) –10yz (d) 10yz
3. The area of a parallelogram is 48 sq. cm. If the base 8 cm then altitude is:
(a) 4 cm (b) 12 cm (c) 6 cm (d) 5 cm

4. Two complementary angles are in the ratio 4:5. The angles are:
(a) 36° and 45° (b) 32° and 40° (c) 40° and 50° (d) 44° and 55°

5. The length of a rectangle is given by
(a) Area / Breadth (b) Area × Breadth (c) Length × Breadth (d) Length + Breadth

Fill in the Blanks
6. A pair of exterior angles on the same side of the transversal is _________.

7. Perimeter of an isosceles triangle is 50. If one of the two equal sides is 18 cm, then third side
_________ cm.
8. Area of trapezium = 1 × (_________) × (_________)
2
9. All algebraic expressions containing two or more terms is _________.
10. Degree of the polynomial 2x y – 3xy + 5 _________.
2
Write ‘T’ for true and ‘F’ for false Statements

11. A pair of interior angle on the same side of the transversal is supplementary.
12. A quantity which has a fixed numerical value is called a variable.

3
2
13. Area of equilateral triangle = 4 a .
14. The term with the highest power in an expression decides the degree of the polynomial.
15. 3ab and 3a b are like terms.
2
2
Case Study Based Questions
Triangles are used in bridges because they evenly distribute weight
without changing their proportions. Before triangles were used in
bridges, they were weak and could not be very big. To solve that
problem engineers would put a post in the middle of a square and
make it more sturdy. Isosceles triangles were used to construct a
bridge in which the base and equal sides of an isosceles triangle
are in the ratio 1:2:2 and its perimeter is 200 m.