4(2x+3)(2x-3) is the answer
Answer:
HCF of 15 and 18 = 3
3ft long is the greatest he can make
Vpyramid=1/3 times area of base times height
volume=1/3 times 18 square inches times 4in
volume=6 square inches times 4in
volume=24 cubic inches
the volume is 24 cubic inches