00:01
Hi, today we are solving the question in which diameter d1 is given as 30 yards.
00:08
So radius will be half of it.
00:10
So radius will be 15 yards.
00:14
And similarly, a ring shaped path goes around the garden.
00:18
So outer edge is given as 36 yards.
00:23
So the radius will be equal to 18 yards.
00:30
Now we have two radius and given that one bag of sand can cover 4 square yard.
00:44
So if we see that the total path r1 plus r2 will be equal to 18 plus 15 that is equals to 33 yards.
01:03
And here, so area will be equal to pi whole square of r1 plus r2 that is r square plus pi r1 not plus it is minus pi r1 square.
01:28
So on substituting the values, so area will be equal to pi into r square is 33 whole square minus pi into 15 whole square.
01:41
On solving it, we get area is equals...