tolong bantu jawab yg INI ya pake cara (no 10)

Perbandingan sisi
t1/t2 = 25/20 = 40/x = 5/4
x = 32 cm

t1 = √(20² - 16²) = 12 cm

L1 - L2
= 1/2 (40 . t1 - 32 . t2)
= 1/2 (40 . 5/4 t2 - 32 t2)
= 1/2 (18 t2)
= 9 t2
= 9 . 12
= 108 cm²