Question

7) Arectangular field is 48 m long and 40 broad. Find the cost of levelling the field at the rate of Rs. 3 per sq. metre.

9) The perimeter of a classroom is 42m. If the length of the classroom is 12, find the breadth of the classroom and hence find the are of the classroom.

10) Perimeter of a square cardboard is 1m. Find its area in cm².












I only want the answer of 7, 9 and 10...

I my URGENT HOMEWORK and it's IMPORTANT too...​

Answer 1

Answer:

I hope it helps you army I don't know the answer of 10