1.The base length of a rectangle is multiplied by 8. How does this affect the area? A. area is 2x bigger
B. area is 4x bigger
C. area is 8x bigger
D. area is 16x bigger

2.The base length and the width length of a rectangle are both multiplied by 4. How does this affect the area?
A. area is 2x bigger
B. area is 4x bigger
C. area is 8x bigger
D. area is 16x bigger

3.The radius of a circle is tripled. How does this affect the area?
A. area is 3x bigger
B. area is 6x bigger
C. area is 9x bigger
D. area is 18x bigger