4 years ago

He

Mathematics

2 answers:

Juli2301 [7.4K]4 years ago

6 0

Answer:

A.The propeller rotates 30 times in 90 seconds

Step-by-step explanation:

Is not true as the propeller would rotate 36 times.

Artyom0805 [142]4 years ago

4 0

Answer:

the answer is A, 15*6= 90 so 6*6=36 which is not 30

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