Find the are
We the area of the shaded region in each of the figures given below:
Calculate the
1.5 m
27 m-
40 m
2
2 m
40 m
43 m
Answers
Answer:
* Do as directed :- (10)
1. a] Add : 25.66, 1.704 and 14.62
b] Subtract 78.4 from 88.398
2. Raj’s age is 5 more than three times Suraj’s age. Find the rule for
finding Raj’s age in terms of age of suraj.
3. Divide 66 chocolates between Arun and Vikas in the ratio 7:4
4. Simplify : 44.236 – 29.009 + 9.005 – 12.48
5. Construct a 45°angle using ruler and compass only.
SECTION – B
* Do as directed :- (12)
1. In a class of 36 students, 20 are girls and the rest are boys. Find the
ratio of:
(i) the number of boys to the number of girls.
(ii) the number of boys to the number of students in the class.
2. Jessica wants new carpeting for her room. The room is 9 m by 7 m
rectangle. If carpeting cost ` 2 per square meter, how much will it cost to
lay carpet for the entire room?
3. Angles of triangle are given below. For each, classify whether it is acute,
right or obtuse
I] 120°, 11°, 49°
II] 90°, 80°, 10°
III] 29°, 79°, 72°
IV] 60°, 70°, 50°
V] 123°, 27°, 30°
VI] 30°, 90°, 60°
4. Name the type of triangles.
I] A triangle with two sides equal.
II] A triangle with no sides equal.
III] A triangle with all sides and angles equal.
SECTION – C
* Do as directed :- (08)
1. Construct a line segment of 8 cm. Mark a point P above it. Construct
a perpendicular line that passes through point P. Write steps of
construction also.