Question

5. The cost of flooring a room at *25 per square metre is 1125. If the room is 5 m wide, find its length.
6. A room is 15 m long and 12 m broad. Find the cost of covering the room with a carpet, which is a square
of length 2 m, at the rate of 50 per square metre.
7. A wire is in the shape of a rectangle. Its length is 40 cm and breadth 22 cm. If the same wire is given the
shape of a square, what will be the measure of each side? Also find which shape--rectangle or square-
HOTS​

Answer 1

Answer:

5.cost of flooring per tile = 25 rp

money taken to floor it = 1125 rp

so; the area = 1125/25

= 45 sq meter

now acc to ques

lb = area

let l= length be x

so;

5x = 45

x = 45/5

= 9

so length is 9

6.Given that a room is 15m long

and 12m aboard

We have to the cost of carpet at rate of rupees 50

Ok first we find its area that is l×b

=15×12 = 180m^2

Now, it is given that it is square of lenght 2m

So 180÷2=90

Therefore 90×50= rupees 4500 answer

7.According to the question,

Perimeter of square=Perimeter of rectangle

⇒4× side=2(length+breadth)

⇒4×side=2(40+22)

⇒4×side=2×62

⇒ side=42×62​=31cm

Thus, the side of the square is 31cm.

Now, Area of rectangle=length×breadth=40×22=880cm2

And Area of square=side×side=31×31=961cm2

Therefore, on comparing, the area of square is greater than that of rectangle.

Step-by-step explanation:

Answer 2

Answer:

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