Question 13 Marks
Akshi wants to put lace all around a rectangular tablecloth that is 3 m long and 2 m wide. Find the length and area of the lace, if lace is $\frac{1}{10} m$ wide.
Answer
View full question & answer→Length $=10 m$, Area $=1 m^2$
Questions
3 Marks Question
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10 questions · self-marked practice — reveal the answer and mark yourself.
Question 23 Marks
Split the following shapes into rectangles and find the area of each. (The measures are given in centimetres)
Answer
View full question & answer→(i) $35 cm^2$
(ii) $245 cm^2$
(iii) $9 cm^2$
(ii) $245 cm^2$
(iii) $9 cm^2$
Question 33 Marks
The following figures have been split into rectangles. Find their areas. (The measures are given in centimetres).
Answer
View full question & answer→(i) $28 cm^2$
(ii) $9 cm^2$
(ii) $9 cm^2$
Question 43 Marks
A marble tile measures 10 cm x 12 cm. How many tiles will be required to cover a wall of size 3 m x 4 m? Also, find the total cost of the tiles at the rate of ₹2 per tile.
Answer
View full question & answer→1000,₹ 2000
Question 53 Marks
A marble tile measures 15 cm x 20 cm. How many tiles will be required to cover a wall of size 4 m x 6m?
Answer
View full question & answer→800
Question 63 Marks
Area of a rectangle of breadth 17 cm is $340 cm^2$. Find the perimeter of the rectangle.
Answer
View full question & answer→Perimeter = 74 cm
Question 73 Marks
A rectangle has the area equal to that of a square of side 80 cm. If the breadth of the rectangle is 20 cm, find its length.
Answer
View full question & answer→320 cm
Question 83 Marks
What will happen to the area of a rectangle if its
(i) Length and breadth are trebled.
(ii) Length is doubled and breadth is same.
(iii) Length is doubled and breadth is halved.
(i) Length and breadth are trebled.
(ii) Length is doubled and breadth is same.
(iii) Length is doubled and breadth is halved.
Answer
View full question & answer→(i) 9 times the old area
(ii) 2 times the old area
(iii) Does not change
(ii) 2 times the old area
(iii) Does not change
Question 93 Marks
Find the area of a rectangle, whose
(i) Length = 6 cm, breadth = 3 cm
(ii) Length = 8 cm, breadth = 3 cm
(iii) Length = 4.5 cm, breadth = 2 cm.
(i) Length = 6 cm, breadth = 3 cm
(ii) Length = 8 cm, breadth = 3 cm
(iii) Length = 4.5 cm, breadth = 2 cm.
Answer
View full question & answer→(i) Area $=18 cm^2$
(ii) Area $=24 cm^2$
(iii) Area $=9 cm^2$
(ii) Area $=24 cm^2$
(iii) Area $=9 cm^2$
Question 103 Marks
Use tracing paper and centimeter graph paper to compare the areas of the following pairs of figures:
Answer
View full question & answer→self