Answer:
x = 15
Step-by-step explanation:
Interior angles and their exterior angles make a supplementary angle meaning they have a sum of 180°. Knowing this, we can make an equation to solve for x.
x + 165 = 180
x = 15
Answer:
2,294.66 square inches
Step-by-step explanation:
The area of an octagon is given by the formula:
A = 2 * a² * ( 1 + √2 )
So, if we input the numbers we have:
A = 2 * 21.8² * ( 1 + √2 )
A = 2 * 475.24 * (2.4142)
A = 2,294.66 square inches
As you can see, if you double the side of an octagon, its area will quadruples, which is logic since the one variable in the calculation of the area is the side's length... that is squared. So, if you double it, that double factor is squared.
It's as if we had written
A = 2 * (10.9 * 2)² * ( 1 + √2 )
A = 2 * (10.9² * 2²) * ( 1 + √2 )
You didn't specify 10 what. However, a yard is equal to 36 inches, or about 3 feet.
Answer:AB=CD=16cm
area of parallelogram=b×h
area of ABCD=CD×AE=AD×CF
16×8=AD×10
128=AD×10
12.8=AD
Step-by-step explanation:
Answer:
170 feet
Step-by-step explanation:
The perimeter formula is l+l+w+w or in our case:
50+50+35+35=170
The perimeter is 170 feet.
Actually hold on. Did you give us the side lengths or the area or what?