Answer:
I need helpppppppppppppppppppppppplz
Answer:
?
Step-by-step explanation:
?
Answer:
55.74
Step-by-step explanation:
<em>Since the culture was tested and then the countdown started, you need to multiply the initial value by 3.5. Since it is tested once every 15 minutes, it will be tested two more times by the time 30 minutes is up; a total of 3 times tested.</em>
1.3 x 3.5 = 4.55
4.5 x 3.5 = 15.925
15.925 x 3.5 = 55.7375
Answer:
127.17 cm²
Step-by-step explanation:
- Area of a semicircle: 1/2*π*r²
- π (pi) = 3.14
- r (radius) = d (diamater) / 2 => 18/2 = 9 cm
A = 1/2*π*r²
A = 1/2*3.14*9²
A = 1/2*3.14*81
A = 3.14*40.5
A = 127.17 cm²
Therefore, the area of the semicircle is 127.17 cm²
Hope this helps!