Model each problem with a quadratic equation. then solve. if necessary, round to the nearest tenth 1. find the side length of a square with an area of 196 ft^2

2. find the radius of a circle with an area of 100 in^2

3. find the side length of a square with an area of 50 cm^2
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The blue whale is the largest animal living on the earth. the average blue whale measures 100 feet long (30 meters) and weighs 300,000 pounds (136,000 kilograms). a whale’s head is 1⁄3 of the length of its body. a new baby whale is 1⁄4 the length of a grown whale. the average man is 1⁄17 the length of a blue whale, and 1⁄1,818 its weight. a human baby measures 1⁄4 of the length of an adult. calculate the following information: how long is a whale’s head? how long is a new baby whale? how tall is the average man? how much does the average man weigh? how tall is the average human baby?

15/16 as a decimal rounded to the nearest hundredth

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way