Rhombuses have acute and obtuse angles, so if it gives one just subtract it from 180
Answer:
Step-by-step explanation:
10+10=20
6x6=36
your welcome
Answer:
cm^2
Step-by-step explanation:
area of an equilateral triangle =
(s = length of the side)
area = 
area = 
area =
cm^2
Answer:
13
Step-by-step explanation:
We only need to pay attention to the x. We multiply 3 and 4 to get 12. Then we add 1 to get 13.
Answer:
So, the required width of rectangular piece of aluminium is 8 inches
Step-by-step explanation:
We are given:
Perimeter of rectangular piece of aluminium = 62 inches
Let width of rectangular piece of aluminium = w
and length of rectangular piece of aluminium = w+15
We need to find width i.e value of x
The formula for finding perimeter of rectangle is: 
Now, Putting values in formula for finding Width w:

After solving we get the width of rectangular piece :w = 8
So, the required width of rectangular piece of aluminium is 8 inches