Answer:
2198.9 cm³
Explanation:
Volume of flower vase = volume of cuboid - voume of cone
Volume of cuboid = lbh (length×breath×height) = 12 × 10 × 20 = 2400 cm³
Volume of cone = ⅓ × base area × height
Base area = area of circle = pi radius² = pi 4² = 16 pi
(the diameter of the circle is 8 so to find the radius you just divide it by 2 and you'll get 4)
So,
vol of cone = ⅓ × 16 pi × 12 = 64 pi = 201.06192
Volume of flower vase = 2400 - 201.06192 = 2198.93808 = 2198.9