Math Weekly Assessment #8 1. 2. A rectangular tank, 30 cm long and 18 cm wide, contained some water and a stone. When a stone was taken out, the water level dropped by 2 cm. Find the volume of the stone. fi 3. A rectangular tank, 30 cm long and 20 cm wide, is lled with water to a depth of 8 cm. When a stone was put in, the water level rose to 11 cm. Find the volume of the water only. Math Weekly Assessment #8 4. Find the volume of a 6-cm cube. 5. Find the circumference of a circle with a radius of 13 cm. 6. Find the area of a circle with a diameter of 18 cm. CHALLENGE: fi fi A container, when lled with some water and 4 blocks of metal, has a volume of 1 liter. The volume of the water in the container is 832 cubic centimeters. If each block of metal is 7 cm long and 4 cm wide, nd each block’s height.