plis ya yang jenius pakar ambisus tolng y plisss aku mohon

jawab

3)
rusuk  limas = a
luas alas limas  persegi = a²
V0lume = 1/3 luas alas x t
100= 1/3 (a²)(12)
100 = 4 a²
a² = 100/4 = 25
a = √25
a = 5 cm

4.
Volume kerucut = 1/3 π r² t
16.632 =  1/3 (22/7)(r²)(36)
16.632 = 264/7 r²
r²  = (16.632 ) : (264/7) = 441
r = √441
r = 21

6)
Volume  limas = 1/3 luas alas x  tinggi
V limas = (1/3) { 1/2  (5 +8)(6)} (10)
V limas = (1/3)(3)(13)(10)= 130