Diketahui :

A. Keliling = 2 . ( P+L )
=2 . ( 24 + 10 )
= 2 × 34 
= 68 cm
B. Luas = P × L
= 24  × 10 
=240 cm²
L = ( PS )² = 26² – 24²
   = 676 - 576
   =100 mm
L = 10 cm
Semoga Membantu ^_^

(PS)^2 = 26^2 – 24^2
=676-576
=100
PS = 10 cm
a. Keliling = 2(p+l)
=2 (24cm + 10cm)
=2 × 34 cm
=68 cm
b. Luas = p × l
=24 cm × 10 cm
=240 cm^2