Round 3897.24 to the nearest thousand

4000

Step-by-step explanation:

Round 3897.24 to the nearest thousand

Consider which number has the place value of thousand. The result is 3.

Now check the number after if it's 5 and above or below. If above add 1 to 3 but if below add 0.

Therefore

3897.27 to nearest thousand

= (3+1)000

= 4000

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step-by-step explanation:

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.