What is the mode of m?

M mode of ultrasound

Step-by-step explanation:

M-mode is defined as time motion display of the ultrasound wave along a chosen ultrasound line. It provides a monodimensional view of the heart. ... The advantage of the M-mode is its very high sampling rate, which results in a high time resolution so that even very rapid motions can be recorded, displayed, and measured.

b. 24 mm

step-by-step explanation:

use the pythagorean theorem.

a^2 + b^2 = c^2

a^2 + 7^2 = 25^2

a^2 + 49 = 625

a^2 = 576

a = 24

answer: b. 24 mm