40×4×4=640
b=20 h=4
using formula:
1/2×base×height
1/2×20×4=40
its says scale by factor 4:
b=80 h=16
using formula:
1/2×base×height
1/2×80×16=640
answer------>>>>640cm^2
Answer:
48x^2-48x+12
Step-by-step explanation:
3(area of square)
3(w^2)
3((4x-2)^2)
3(16x^2-16x+4)
48x^2-48x+12
Answer:
b
Step-by-step explanation: