Aptitude test
The prefix milli- means Correct Answer: 1/1000 (1000millimeter = 1meter) to convert you're either multiplying or dividing by 1000
kilo Correct Answer: a thousand (I kilo xy = 1000 y)
mega Correct Answer: a million (1 megaxy = y)
giga Correct Answer: billion (1 giga xy ...
tetra Correct Answer: a trillion (1 tetra x = 1,000,000,000,000y)
deci Correct Answer: one tenth (10decimeter = 1meter)
centi Correct Answer: one hundredth (100centimeter = 1 meter)
micro Correct Answer: one millionth (1,000,000 micrometers = 1meter)
nano Correct Answer: a billionth (1,000,000,000 nanometers = 1 meter)
pico Correct Answer: one trillionth (1,000,000,000,000 picometers = 1 meter)
1 us ton in pounds Correct Answer: 2000pounds = 1 ton
one gram is how many oz Correct Answer: 1g = 0.3527oz
1oz is how many grams Correct Answer: 1oz = 28.35g
area of a cirle Correct Answer: A = πr²
(π): pi, approx. 3.14
pythagorean thereom Correct Answer: in a right triangle, a^2 + b^2 = h^2
perpendicular lines Correct Answer: Lines that intersect to form right angles
isosceles triangle Correct Answer: has two congruent angles, that meet with a vertex of the congruent
side and the non congruent side. there are two congruent sides and one that is not
scalene triangle Correct Answer: has no equal sides
equation that helps find sum of angles in a triangle Correct Answer: sum of a triangles angles are always
180
finding side of triangles that's not a right triangle and gives you an altitude Correct Answer: make a right
triangle with the altitude and use pythagorean
, sin of theta Correct Answer: opposite/hypotenuse
cos of theta Correct Answer: adjacent/hypotenuse
tan of theta Correct Answer: opposite/adjacent
area of a triangle Correct Answer: b/2 * h
area of a trapezoid Correct Answer: A=1/2h(b1+b2)
perimeter of a circle Correct Answer: pi * diameter
volume of a cube Correct Answer: edge * 3
volume of a cylinder Correct Answer: V=πr²h
volume of a cone Correct Answer: V=1/3πr²h
volume of a sphere Correct Answer: V=4/3πr³
how to convert decimal number to binary number (or any number form) Correct Answer: start by
dividing original number by 2 then record the remainder as well, divide the result of the last division by
2, and then record remainder...repeat until you get to the number that is not divisible by 2 and give it a
remainder of 1. your binary number is all of those remainders recorded opposite of how you found
them...like if this
0
1
0
0
1
1
0
1
0
1
was your table then your binary number is (1010110010)base 2
also when converting any decimal number you only have to divide by whatever case that number form
(that you're converting to) is in
ex. If going from decimal form to octal form then you do everything the same except you divide by 8
how do convert any number form to decimal form Correct Answer: when converting binary this form is
called doubling because binary uses base 2.
so take your original number in case(x) then add the leftmost digit with the previous total times x
convert binary form to octal form Correct Answer: group your binary numbers into groups of three
always starting with your rightmost groups
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