Problem
First name
William Guest
School
Hitchin Boys School
Country
Age
11
A=2ocm because: B =
say x = lenth and y = width lenth=6cm
x + 2y =13cm width=2cm
3x + 4y =33cm perimeter =16cm
we times the first one by three to get C =
3x + 6y =39cm lenth=20mm
3x + 4y =33cm then minus them width=5mm
2y=6cm perimeter=50mm
y=3cm D=
so then we put y into the equation lenth=6cm
x + 6 = 13 width=1.5cm
x = 7 perimeter= 15cm
7 times 2 = 14 for the lenth
3 times 2 = 6 for the width
14+6 =20cm
no but we know it is
2a + 2b = 2c