Substitute the given values A = 77 and h = 4 into the formula A = bh. Then solve for the variable b.

b=19.25

Step-by-step explanation:

Ok, so if you plug in 77 for A and 4 for h, you will get 77=4h. So from here, you have to divide 77 by 4, which is 19.25 and that is the answer for variable b.

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

step-by-step explanation:

i have done this all on a piece of paper but idk how to put it on here cuz it needs to be drawn