Question

pls answer to question -7​

Answer 1

Answer:

answer is 80 cm

Step-by-step explanation:

given the ratio is 2:5:9

and  we can assume that the ratios  are 2x:5x:9x

the longest pice is 9x

given  it is made in to 3 parts each 15

so total is 45 cm long strip

9x=45

x=5

2*5+5*5+9*5=80