1.
A gardener planted 1,521 trees in rows such that the number of rows was equal to
the number of plants in each row. Find the number of rows.
2.
An officer wants to arrange 2,02,500 cadets in the form of a square. How many
cadets were there in each row?
The area of a square field is 5184 m².
3.
A rectangular field, whose length is twice its
breadth, has its perimeter equal to the perimeter of the square field. Find the area
of the rectangular field.
Answers
fartosation hai sara questions ka
1.
Let the number of rows be = X
Then, number of plants in each row be = X
A/Q
X×X= 1521.
X²=1521
X=√1521
√1521=√3×3×13×13
= 3×13
=39
=39 Rows ( Answer)
2.
Let the number of cadets be = X
number number of cardets in each row = X
A/Q
X × X = 202500
X²=202500
X=√202500
√202500=√2×2×5×5×5×5×3×3×3×3
= 2×5×5×3×3
=450
=450 cadets in each Row
3.
area of square field=5184m²
(side)²=5184
Side=√5184.
=√2×2×2×2×2×2×3×3×3×3
=2×2×2×3×3
=72m
let the breadth of rectangle field=Xm
show length of rectangle field= 2Xm
perimeter of rectangle field=2(l+b)
. = 2(2X+X)
=6Xm
perimeter of square field= 4× side
=4×72
=288m
A/Q
perimeter of rectangular field =Perimeter of square field=6X=288
X=288/6
= 48m
so length of rectangle field=2×48
=96m
breadth of rectangle field=48m
area of rectangle field=l×b
= 96×48m²
= 4608m²
