keliling bangun di atas adalah...

sisi miring
= √16² + 12²
= √256 + 144
= √400
= 20 cm

sisi alas
= √25² - 20²
= √625 - 400
= √225
= 15 cm

Keliling
= 16 cm + 12 cm + 15 cm + 25 cm
= 68 cm

SISI MIRING SEGITIGA SAMA SISI
= √ 16^2 + 12^2
= √ 256 + 144
= √ 400
= 20
SISI ALAS
= √ 25^2+20^2
= √625 + 400
= √225
= 15
JADI KELILING SEGITIGA
= SISI DEPAN + (SISI ALAS) + SISI MIRING
= 16 + ( 12+15 ) + 25
= 16 +27 + 25
= 43 + 25
= 68 cm

SEMOGA MEMBANTU & BERMANFAAT