Question

16. What is the greatest possible length which can be used to measure exactly the lengths 8 m, 4m
20 cm and 12 m 20 cm?
a. 10 cm
c. 25 cm
b. 30 cm
d. 20 cm​

Answer 1

Answer:

10 cmis greatest possible length

Answer 2

Answer:

20cm

Step-by-step explanation:

.8m = 800 cm

4m 20cm = 420 m

12m 20cm = 1220 cm

800 = 10 x 2 x 2 x 2 x 2 x 5

420= 10 x 2 x 3 x 7

1220 = 10 x 2 x 61

GCD = 10 x 2 = 20 cm