What is HK? have any clue?

As a relation between height and hypotenuse in right triangle GHJ, we have:

HK^2 = KG x KJ

=> HK = sqrt(KG x KJ) = sqrt(2 x 8) = sqrt(16) = 4

Hope this helps!

:)

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

0.6

39mph

step-by-step explanation: