Question

A park is 25 complete 4 by 5 metre long and 20 complete 2 by 3 metre wide. Find its perimeter. If a walkway is to be constructed inside the park which is 2 complete 3 by 8 metre wide,what would be the inside perimeter of the walkway?

Answer 1

Answer:

35 would be the inside perimeter of the walkway

Answer 2

Answer:

Park = 92 14/15m Walkway = 56 7/20 m

Step-by-step explanation:

Perimeter of park = 2(l+b)

= 2 (25 4/5 + 20 2/3)

LCM = 15

25 4/5 = 129/5 = 387/15

20 2/3 = 62/3 = 310/15

= 387+310/15 = 697/15 = 46 7/15

So 2 × 697/15 = 1394/15 = 92 14/15

length = 25 4/5

P = 2(25 4/5 + 2 3/8)

LCM = 40

129/5 = 1032/40

19/8 = 95/40

= 1032+95/40 = 1127/40 = 28 7/40

So 2× 1127/40 = 56 7/20

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