Question

can someone hep me with this problem please.
Let A, B, C denote three rectangles, all with perimeter equal to 240, whose heights are h_A = 20, h_B = 60, h_C = 110, respectively. Which of the rectangles A, B, or C has the smallest area?

Answer 1

i think its c

Answer 2

thank you so much. I thought it was a but i got it wrong.

Answer 3

oh wait i think i got it wrong

Answer 4

P = 2b + 2h right?

Answer 5

yes

Answer 6

240 = 2b + 2(20)
240 = 2b + 40
200 = 2b
100 = base of A

do the same with the other rectangles
60 = base of B
10 = base of c

A = b x h

substitute the values then find which had the smallest area

Answer 7

Thanks, also got base C with area 360

Answer 8

welcome