What is the formula to find the area for a square, trapezoid, triangle,and a parallelogram​

Answer :

square=a^2
trapezoid: a+b over 2 times height
triangle=bxh divide by 2
parallelogram= bxh

Answer:

for square its A=a2

for trapezoid its A=a+b/2h

for triangle A=hbb/2

for parallelogram A=bh

Step-by-step explanation: