Answer:
a
Step-by-step explanation:
A=lb
a=100×40=4000cm^2
a=0.5×lb
a=0.5×40×30
a=600cm^2
a=4000+600
a=4600cm^2 hope it helps!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
obtuse triangle
Step-by-step explanation:
only one angle in a triangle has to be over 90 degrees for it to be and obtuse triangle
hoped this helped
