Question

Yang di silang yaa tolong bantuin aneee

Answer 1

2) 1/2 . 10 = 5 cm
maka :
t.bidang tegak = akar dr 5²+12²
= akar dr 25+144
= √169
= 13 cm

jadi, Lp.limas = L alas + jumlah L sisi tegak
= 10² + 4.1/2.10.13
= 100 + 260
= 360 cm²


3) 1/2.10 = 5 cm ------> t1.bidang tegak = akar dr 5²+12²
= akar dr 25+144
= √169 = 13 cm

1/2.18 = 9 cm -------> t2.bidang tegak = akar dr 9²+12²
= akar dr 81+144
= √225 = 15 cm

jadi, Lp.limas = L alas + jumlah L sisi tegak
= 10.18 + 2.1/2.10.13 + 2.1/2.18.15
= 180 + 130 + 270
= 580 cm²