Question

7.
Length and breadth of a rectangle are 8 1/3 and 61/2 cm. Find the perimetres,
8.
Find the perimetre of square garden whose each side is 7 3/4 metre.
9.
The cost of a book Mathematics is Rs. 2242. Find the cost of 12 such books,
10. A water tank can hold 56 1/4 litre of water. How much water is contained in the
tank when it is 2/5 full ?
11. An aeroplane covers 1020 km in an hour. How much distance willit cover in 4 1/6
hours ?




please give me answer fast​

Answer 1

Answer:

7. length=8 1/3 = 25/3

breadth = 61/2

perimeter = 2(l+b)

LCM = 6

So

25/3 x 2/2 = 50/6

61/2 x 3/3 = 183/6

Perimeter= 2(50/6+183/6)

                =2(233/6)

               =466/6 = 77 2/3cm

8. side= 7 3/4 = 31/4m

p=31/4 x 4 = 31m

9. 1 book = Rs. 2242

12 books = 2242x12= Rs. 26904

10. 1 = 56 1/4 = 225/4

2/5 = 225/4 x 2/5

     = 45/2 = 27 1/2 or 27.5

1 hour = 1020 km

4 1/6 = 25/6

25/6 hr = 1020 x 25/6

           = 4250 km