I need help on 6 and 7 PLZ I WILL GIVE BRAINLIEST IF ANSWERED RIGHT

Answer:
6. 300 m^2
Step-by-step explanation:
Volume of triangular Pyramid = V = 1/3AH, where A=Area of the base, H=Height. So,
300 =1/3A*3
300 =1/3*3*A
300 =A, or
Area of the base =300 m^2.
Answer:
300 square meters is the answer for 6 and Length= 25ft for 7
Step-by-step explanation:
Volume of a triangular prism: (area of base)(length)
Base: triangle
Area of base=
h=20 ft
b=10 ft
area of base= 100ft²
2500ft³= (100ft²)(length)
25= length