5 cm
Step-by-step explanation:
We know these are similar triangles, so we can use ratios of side lengths
x/40 = 4/32
Using cross products
32x = 4*40
32x = 160
Divide each side by 32
32x/32 = 160/32
x =5
12m
step-by-step explanation:
square root means have of a number so have of 3 is 1.5 then multiply it by 8 and you get your answer!