What will be the perimeter and the area of the rectangle with a height of 6 cm and a width of 8 cm be if it is enlarged using a scale factor of 4.5?

Question

(This is a 7th grade math word problem) ANSWER ASAP

Answer 1

Hi Olivia--

 

Draw two rectangles, one bigger than the other.

 

Label the sides of the smaller one with 6 cm on each of the two short sides, and 8 cm on each of the two longer sides.

 

Label the other one the same way, but instead of 6cm, write "6 x 4.5 cm" and instead of 8 cm, write "8 x 4.5 cm"

 

Now you can figure out the new length and width, and after that you multiply l x w for the area, and you add up the 4 sides for the perimeter.

 

(ok, here's one more hint: 6 x 4.5 = 27, and 8 x 4.5 = 36)

 

:-)  Hope this helps

 

Matt in NY