Question

I do not understand this.

Answer 1

a) 2(3 + 5(3))) = 2(3 + 15) = 2(18) = 36 cm

2(5 + 3(3)) = 2(5 + 9) = 2(14) = 28 cm

Smallest perimeter is 28 cm.

b) 2(3 + 5(4)) = 2(3 + 20) = 2(23) = 46 cm

2(5 + 3(4)) = 2(5 + 12) = 2(17) = 34 cm

Smallest perimeter is 34 cm.