6. The measure of two adjacent sides of a rectangle are in the ratio of 7:5. If the perimeter of the

rectangle is 336 cm, find its area.7. How many square tiles of side 14 cm will be required to pave the floor of a rectangular room9.8 m x 6.4 m?8. How many envelopes can be made out of sheet of hand made paper 1 m 25 cm by 85 cm if eachenvelop requires a piece of paper of size 17 cm by 5 cm? Rohan made these envelopes and sold themat 12.50 each. What amount he collected? He donated the amount to an orphanage. What values aredisplayed by Rohan?39. The length of a rectangular field is 60 m and the breadth is th of its length. Find the area of the field.4