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E:\Working\Focus_Learning\Math_Genius_5_(05-10-2023)\Open_Files\CHAP_11
\\November 22, 2023 5:10 PM Surender Prajapati Proof 5 Reader _________________________ Date: ___________________74
Chapter assessment
1. Choose the correct option.
(a) If the area of a square is 100 sq. units, then what is its perimeter?
(i) 10 units (ii) 10 sq. units (iii) 40 units (iv) 40 sq. units
(b) If eight squares, each with a perimeter of four units, are combined side to side to
form a rectangle with a length of four units, what is the perimeter of the newly
formed rectangle?
(i) 32 units (ii) 36 units (iii) 16 units (iv) 12 units
(c) The difference between the length and the width of a rectangle is 8 cm and the
perimeter is 64 cm. Which of the following can be the dimensions of the rectangle?
(i) L = 12 cm, B = 4 cm (ii) L = 20 cm, B = 12 cm
(iii) L = 10 cm, B = 2 cm
(d) Find the area of the shaded portion if each square’s area is 1 sq m.
(i) 21 sq m (ii) 35 sq m (iii) 34 sq m (iv) 13 sq m
(e) How many cubes of 2 cm can be packed in a cubical box of 6 cm?
(i) 9 (ii) 12 (iii) 27 (iv) 6
(f) The number of cubes of dimensions 20 cm × 20 cm × 20 cm that can be packed
inside a big cube of dimensions 2 m × 2 m × 2 m is _____
(i) 10 (ii) 100 (iii) 1000 (iv) 10000
2. How many square carpets of side 40 cm are required to cover a room with dimensions
16 m by 10 m?
3. The length of a rectangular park is 0.14 km and its breadth is 80 m. What is the
perimeter of the park in metres? Three rounds of barbed wire are needed to fence
the park. Find the cost of the fencing the park if the barbed wire costs `2.20 per
metre. COmPetenCy BASed QueStiOn
4. Kareem has a garden measuring 340 m by 80 m. He wants to divide the garden into
square flower beds of side 8 m. How many flower beds can be formed?
5. How many blocks, each 25 cm long and 12 cm wide, will be required to lay on a path
which is 12.5 m long and 4.8 m wide?
6. Find the cost of painting four walls of a room if each room is 4 m 50 cm high and
each side of the room is 6 m long. The cost of painting is `10 per sq. m.
Mathematics-5 229
