Question

2) Find the number of pairs of observations from the following data, r = 0.15, 5, = 4, 2(x,- *) , - y) = 12, 2(x, – 3)2 = 40.​

Answer 1

Step-by-step explanation:

Let length be a m and breadth be b m.

Daigonal =34 m

=>a2+b2=(34)2

=>a2+b2=1156

Also,

2(a+b)=92

=>(a+b)=46

Area of rectangle =(ab) m2

Now,we know,

(a+b)2=a2+b2+2ab

=>(46)2=1156+2ab

=>ab=22116−1156

         =2960

         =480

Therefore,

Area =480 m2

Answer 2

Step-by-step explanation:

hope it will be help full