A cylinder with the base radius of 8cm and has a height 12cm. Calculate to four significant figure. i. the curved surface area. ii. total surface area. iii. surface area of the cylinder when opened at one end. Take π =3.142.

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?

In a column proof the right column states your reasons

Which of the following represents the length of a diagonal of this trapezoid?