The value is 20,000 because 2x10 equals 20, 20x1,000 equals 20,000
Each box may receive more than one letter.
The flat surfaces of a 3D shape are called faces
The scale factor of two means you need to multiply the original length by 2:
9 x 2 = 18
The new length would be 18 cm.
ANSWER
My answer is in the photo above