Awater trough is
10m
long and a cross-section has the shape of an isosceles trapezoid that is
30cm
wide at the bottom,
80cm
wide at the top, and has height
50cm
. if the trough is being filled with water at a rate of
.2
m
3
/min
, how fast is the water level rising when the water is
30cm
deep?

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc

first one because it can't have a fraction in it

step-by-step explanation: