Question

Hello guys please help me 13 and 16 number question is very important for me

Answer 1

Answer of 13.....

area=10000/2=5000m^2

area of square = side × side

therefore length of one side = root 5000

length of diagonal of a square = side × root 2

therefore length of diagonal = root 5000 × root 2 = root 10000
ans = 100

Answer 2

13) Let the length of each side of square be 's'.

Now, the area of the square = 1/2 of hectare = 0.5 hectare

1 hectare = 10000 sq m

So, 0.5 hectare = 5000 sq m

Now,

Side × Side = 5000 sq m

Side = √5000

Side = 50√2 m

Length of the diagonal of square = √2s

= 50 × √2 × √2

= 50 × 2 

Length of diagonal of square = 100 m

16) surface area of godown = 2(50*10)+2(40*10)+50*40= 1000+800+2000= 3800m^2

cost of whitewashing = 20*3800 = Rs. 76000