The perimeter is just the sum of all the side lengths, so you have
Hello!
Find 45% of 50 using multiplication. Begin by converting 45% into a decimal:
45 / 100 = 0.45
Multiply 50 by the solved value above to find the amount:
0.45 × 50 = 22.5
sin(0) = opposite/hypotenuse = 2/5
cos(0) = adjacent/hypotenuse = sqrt21/5
tan(0) = opposite/adjacent = 2/sqrt21 * sqrt21/sqrt21 = 2sqrt21/21
cot(0) = adjacent/opposite = sqrt21/2
sec(0) = hypotenuse/adjacent = 5sqrt21/21
50.24 square inches. If the diameter is 8in, then the radius must be half the diameter, or 4. You can just plug 4 into the formula for the area of a circle [A=pi*radius^2]. When you multiply 3.14 by 4^2, you get 50.24 square inches.
Answer: x = -3
set them equal to each other and reverse pemdas as shown in my image