1 point This picture shows a cross-section of a blood vessel. The diameter of the
lumen in Figure 10 is 25.0 mm. What is the actual diameter of the lumen of
this blood vessel?
lumen
magnification X8
3.1 x 10-2m
3.1 x 10-3 m
O 2.0 x 10-2 m
2.0 x 10-3 m

B. 3.12 x m

Explanation:

From the given picture, it can be deduced that;

the diameter of the image of lumen = 25.0 mm

                                                      = 25.0 ÷ 1000

                                                      = 0.025 m

And,

magnification =

But magnification = 8,and diameter of the image of lumen = 0.025 m.

So that;

8 =

⇒ actual diameter of lumen =

                         = 0.003125

Actual diameter of lumen of the blood vessel is 3.12 x m.

they absorb it i think

not sure

you