Question

plz ans. it urgently .... beat ans. will be marked as brainliest

Answer 1

Answer:

731.45 cm²

Step-by-step explanation:

radius of the hemisphere = 2.1 cm

height of the cone = 4 cm

radius of the cone = 2.1 cm

volume of the solid = volume of the cone + volume of the cylinder

$\frac{1}{3} \pi r^{2}  h +\frac{2}{3} \pi  r^{3}$

$\frac{1}{3} \pi r^{2}  (h + 2r)$

$\frac{1}{3} \pi  2.1^{2} (4 + 2 *2.1)$

$\pi 1.47 * 8.2 cm^{3}$

radius of the cylinder = 5 cm

height of the cylinder = 9.8 cm

volume of the cylinder = $\pi r^{2} h$

                             = $\pi * 25 * 9.8$

volume of the water displaced = volume of the solid

volume of the water left in the cylindrical tub = volume of the cylinder - volume of the solid

$\pi * 25 * 9.8$ - $\pi 1.47 * 8.2 cm^{3}$

$\pi [ 245 - 12.054] cm^{3}$

3.14 * 232.946 cm³

731.45 cm³