Why is this picture wrong, Pythagoras 6ft apart meme

Which of the fallowing best completes the sequence 5,10,15, a) 30 b) 22 c)25 d)35

(urgent ) use pi 3.14 to estimate the circumference of the circle to the nearest hundredth middle is 4in (urgent )

Which is the standard form for this number? (4 x 1 100 ) + (8 x 1 1,000 ) + ( 3 x 1 100,000 ) ? a) 0.004803 b) 0.04803 c) 0.0483 d) 0.483