Answer:
Step-by-step explanation:
Since two sides of the triangle are equal in length, we can conclude that 
is an isosceles triangle. With this information, we can draw an isosceles triangle to find 
. Since the base angles of an isosceles triangle are equal, we can solve for :
(Angle sum of triangle is 
)
(Base angles of isosceles triangles are equal, there is an image attached to show that is one of the base angles)
Hope this helps :)
X + (x + 2) + ( x + 4) + (x + 6)
----------------------------------- = 15
4
4x + 12
--------- = 15
4
Multiply by 4 on both sides
4x + 12 = 60
subtract 12 from both sides
4x = 48
divide by 4 on each side
x = 12
x + 2 = 14
x + 4 = 16
x + 6 = 18
Answer:
1,795.5 m³
Step-by-step explanation:
Volume = base area × height
= [½(11+16)×9.5] × 14
1795.5 m³
