7. a) The perimeter of a square park is 200 m. Find the length of the park.
b) When Ramesh completes one round around a square field he covered 180 m.
(i) What is the perimeter of the field? (i) Find the length of the field.
c) Length of a rectangle is 8 cm and it's perimeter is 26 m. Find the breadth of
the rectangle.
d) A rectangular ground is 70 m wide and its perimeter is 300 m. Find the
length of the ground.
​