Tolong bantu 35&36 jawabanya pake cara bsk dikumpulin ?

luas alas = s * s
= 10*10= 100 cm
v= 1/3 * luas alas * t
= 1/3 * 100 * 12
= 400 cm

35.
cari tinggi segitiga pakek phitagoras
t^2= 12^2+5^2
t^2=144+25
t^2=169
t=13
L.selimut= 1/2.10.13.4
=260cm^2
L.alas= 10×10
= 100cm^2
L.limas = 100+260
=360cm^2

36.
t^2=50^2-30^2
t^2=1.600
t=40
L.segitiga= 1/2.30.40
=600
L.lingkaran= 3,14.10.10
= 314
L.arsir= 600-314
= 286cm^2