Page 271 - ABCTE Study Guide_Neat

B The area is squared.

C The area is multiplied by 4.

D The area is multiplied by 16.

Answer

Choice C is the correct answer. The area of a triangle is given by the formula , where b is the
base and h is the height. The base and height of an isosceles right triangle are its legs, so the area of the
triangle for which the lengths of the legs are doubled is:

The area of the old triangle was and the area of the new triangle is . That means if the lengths
of the legs of an isosceles right triangle are doubled, the area of the new triangle will be four times the
area of the old triangle.

Metric and Customary Systems of Measurement

The metric system is a decimal system of measurement, which means that all metric units are based on
multiples of ten. For example, a kilometer is 1,000 meters and 10 millimeters equal one centimeter.

The metric system is also called the International System of Units (abbreviated SI, for its name in French).
So, metric and SI are used interchangeably.

This table gives the most common metric prefixes and their meanings:

Prefix Symbol Meaning (multiply by)

kilo- k 1000

centi- c
0.01 =

milli- m
0.001 =