4. a) Suppose you have a rectangular shaped roof of length 40 metre and breadth 20 metre and you want to put pots on its entire boundary at every one metre on the roof, then how many pots you can put on that roof? About the author Rylee
Step-by-step explanation: Breadth= 22cm Perimeter of the rectangle= Length of the wire =2(l+b)= 2(40cm + 22cm) =2\times622×62cm = 124cm Now, the wire is rebent into a square. Perimeter= 124cm 4\times side=1244×side=124 Therefore side= \frac{124}{4} 4 124 cm= 31cm So, the measure of each side= 31cm Area of rectangular shape= l\times bl×b =40cm\times22cm40cm×22cm =880cm^2880cm 2 Area of a square shape= \left(Side\right)^2(Side) 2 =\left(31\right)^2=961cm^2(31) 2 =961cm 2 Since 961cm^2\ >\ 880cm^2961cm 2 > 880cm 2 Hence, the square encloses more area. Reply
Step-by-step explanation:
Breadth= 22cm
Perimeter of the rectangle= Length of the wire
=2(l+b)= 2(40cm + 22cm)
=2\times622×62cm = 124cm
Now, the wire is rebent into a square.
Perimeter= 124cm
4\times side=1244×side=124
Therefore side= \frac{124}{4}
4
124
cm= 31cm
So, the measure of each side= 31cm
Area of rectangular shape= l\times bl×b
=40cm\times22cm40cm×22cm
=880cm^2880cm
2
Area of a square shape= \left(Side\right)^2(Side)
2
=\left(31\right)^2=961cm^2(31)
2
=961cm
2
Since 961cm^2\ >\ 880cm^2961cm
2
> 880cm
2
Hence, the square encloses more area.