Question

help me with these 3 guys​

Answer 1

Answer:

8) Here,

l=20m

To go around 5 times=20*5=100

9)2.5cm=1 km

15cm=6km(15/2.5)

10)Each pole are 3m apart,

distance between 1st pole and 8th pole=8*3m=24m

Step-by-step explanation:

I'm not 100% sure, if the ans is right or wrong. ; )

Answer 2

PLS MARK ME AS THE BRAINLIEST

8) 400m   9) 6km   10) 21m

Step-by-step explanation:

8) Length of side of square = 20m

Perimeter of the square = 20×4 = 80m

The cord goes around the square 5 times

The length of cord required = 80×5 = 400m

9) 1 km = 2.5cm

$15cm = \frac{15}{2.5} km$

= 15cm = 6km

10) Distance between each two poles = 3m

Distance between 1st and 2nd pole = 3m

Distance between 1st and 3rd pole = 6m

Distance between 1st and 4th pole = 9m

Similarly, distance between 1st and 8th pole = 3×(n-1)

where n represents the the no. of poles

Distance between 1st and 8th pole = 3×7 = 21m