luas dan kelilingnya

Luas = L prsgi - L ½O - L ∆
= ( s.s)- (½.πr²) - ½ a.t
= (20.20) - (½.3,14.10.10) - (½. 20.6)
= 400 - 157 - 60
= 183 cm²

Kell = kel prsg - kel ½O - kel ∆
= (4s)- (½.2πr)- (a+b+c)
= (4.20) – (3,14.10) – (20+6+13)
= 80 - 31,4 - 39
= 48,6 - 39
= 9,6 cm

jdikn terbrainly yaa