778574 y p py gtoivu goy giov ou ouvyh yuovb ouyhv uo
Answer:
acute and isosceles
Step-by-step explanation:
acute because all angles less than 90
isosceles because 2 sides are equal length
405/5=81 rotations per minute
405/60 seconds times 5 minutes=405/300=1 7/20 rotations per second
9×7=63
63÷2=31.5
31.5×4=126
7×7=49
126+49=175
175 is the answer