Answer:
y = 16
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
the third angle of the inner triangle is defined by using the rule that the sum of all angles in a triangle must be 180 degrees. let's call this angle a
180 = 48 + 16x + a
132 - 16x = a
and then we know that both angles, 28x and a together must also be 180, as they are complementing each other to cover the whole top of the base line.
so,
28x + 132 - 16x = 180
12x = 48
x = 4
Answer:
The first picture and 28.2 square units
Step-by-step explanation:
Equation: A+1/2ps
A = area of the base
p = perimeter of the base
s = slant height
3²+1/2(12)(3.2)=28.2