diameters and radius
Poster board is sold in four different sizes. Molly purchased 5 square feet of poster board for her project. What size poster board did she buy?
A. 65 centimeters x 100 centimeters
B. 2 feet x 3 feet
C. 24 inches x 30 inches
D. 1 yard x 1 yard
Originally Posted by cookiesncreme
since 24'' = 2 ft and 30' = 2½ft and 2ft * 2½ft = 5square feet it's answer C
I don't think this question is related to diameters or radius. It seems to me as unit conversion. Convert the units there, multiply and choose the one that makes 5 square feet.
Edit: earboth was faster ;p