Question

Four cows are tethered at four corners of a square field of 70m side as shown in given figure so that they can reach each other . what area of the field will remain ungrazed

Answer 1

I hope its like this.... Plz check me if there's an error

Answer 2

area of square = area of 4 sectors 
then the next step will be the following,
the remained ungrazed cows 
radius or in short form as (r) = 70/2 which is = 35 
because in 2 table 70 goes at 35 and 35 * 2 = 70
now the tell us see the (side)² r - 0/360 × πr²
symbolicaly it will be
(70)² - 4 × 90/360 × 35 × 35
the canceled numbers are below they are:
7 and 35 cancels and 35 becomes into 5 and 7 becomes 1
0 and 0 cancels 
and 9 and 36 cancels and 9 becomes 1 and 36 as 4
4 and 4 cancels and becomes 1
so,the remaining numbers are 5 and 35 
so,we should multiply 35 and 5
in a symbolical way it will be 
35 × 5 
now 4990 - 3850
in a symbolical way
4990 - 3850 = 1050cm²
the answer is 1050cm²
thank you this was an hardwork to me to post directly 
thank you please mark as brainliest answer i need them.