Jawapan

2016-09-24T16:09:49+08:00
PQRS = segi empat sama
luas PQRS = 25cm²

let x = PQ=QR=RS=SP=RT

x² = 25
x = 5 cm

perimeter seluruh rajah
= SP+PQ+QR+RT+TU+US
= 5+5+5+5+10+8
= 38 cm