Question

Help! I don’t understand this and I need help! “What is the length of the missing side?” Also D was cut off but it says 90

Answer 1

The missing side = 30 cm

Explanation:

Pythagorean Theorem

a^2 + b^2 = c^2

40^2 + b^2 = 50^2

1600 + b^2 = 2500

-1600 -1600

b^2=900

square root of both sides

b=30 cm