tolong jawab 25,26,27,30

25)D
volum tabung
phi × r × r ×t
=22/7×14×14×15
=9,240

26)D
L.segitiga
1/2×25×18
=225
L.persegi
Sisi×sisi
25×25
=625

L.total
225+625
=850

27&30 gk bisa...maaf ya