Find the perimeters of the rectangles whose lengths and breadths are given below:
(i) 7 cm, 5 cm
(ii) 5 cm, 4 cm
(iii) 7.5 cm, 4.5 cm
Find the breadth of the rectangle whose perimeter is 360 cm and whose length is
(i) 116 cm
(ii) 140 cm
(iii) 102 cm
Two sides of a triangle are 15 cm and 20 cm. The perimeter of the triangle is 50 cm. What is the third side?
A wire of length 20 m is to be folded in the form of a rectangle. How many rectangles can be formed by folding the wire if the sides are positive integers in metres?
A square piece of land has each side equal to 100 m. If 3 layers of metal wire has to be used to fence it, what is the length of the wire needed?
Shikha runs around a square of side 75 m. Priya runs around a rectangle with length 60 m and breadth 45 m. Who covers the smaller distance?
The dimensions of a photographs are 30 cm × 20 cm. What length of wooden frame is needed to frame the picture?
To fix fence wires in a garden, 70 m long and 50 m wide, Arvind bought metal pipes for bosts. He fixed a post every 5 metres apart. Each post was 2 m long. What is the total length of the pipes he bought for the posts?
Find the cost of fencing a rectangular park of length 175 m and breadth 125 m at the rate of Rs 12per meter.
A rectangular piece of land measure 0.7 km by 0.5 km. Each side is to be fenced with four rows ofwires. What length of the wire is needed?
Avneet buys 9 square paving slabs, each with a side of ½ m. He lays them in the form of a square.
(i) What is the perimeter of his arrangement?
(ii) Shari does not like his arrangement. She gets him to lay them out like a cross. What is the perimeterof her arrangement?
(iii) Which has greater perimeter?
(iv) Avneet wonders, if there is a way of getting an even greater perimeter. Can you find a way ofdoing this? (The paving slabs must meet along complete edges they cannot be broken)
The following figures are drawn on a squared paper. Count the number of squares enclosed by each figure and find its area, taking the area of each square as 1 cm².
On a squared paper, draw (i) a rectangle, (ii) a triangle (iii) any irregular closed figure. Find the approximate area of each by counting the number of squares complete, more than half and exactly half.
Draw any circle on the graph paper. Count the squares and use them to estimate the area of the circular region.
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
What will happen to the area of 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.
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.
A marble tile measures 15 cm × 20 cm. How many tiles will be required to cover a wall of size 4 m × 6m?
A marble tile measures 10 cm × 12 cm. How many tiles will be required to cover a wall of size 3 m ×4m? Also, find the total cost of the tiles at the rate of Rs 2 per tile.
One side of a square plot is 250 m, find the cost of levelling it at the rate of Rs 2 per squaremetre.
The following figures have been split into rectangles. Find their areas. (The measures are given in centimetres)
The following figures have been split into rectangles. Find their areas. (The measures are givenin centimetres)
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