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.
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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:
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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.