If a safety switch has a 1 in 10 chance of failing, how many switches would a company want to install in order to have only a 1 in million chance of them all failing at the same time

Trigonometry hellllllpppppppp asap

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

Someone me what is the area of this figure? 18m 18m 8m 16m