Please help me with Ac At Ct show me how you get it and the answers please I really need help please if u can help me

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Acompany produces packets of soap powder labeled “giant size 32 ounces.” the actual weight of soap powder in such a box has a normal distribution with a mean of 33 oz and a standard deviation of 0.7 oz. to avoid having dissatisfied customers, the company says a box of soap is considered underweight if it weighs less than 32 oz. to avoid losing money, it labels the top 5% (the heaviest 5%) overweight. how heavy does a box have to be for it to be labeled overweight?

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi