Science 8 Fluids Prelab Activity: Finding the volume of a solid

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

V represents...

• Volume
• Variable
• Vertical
• Vanessa

h represents...

• Height
• Hill
• Height of Base
• Area of Height

Find the volume of the cylinder. Round your answers to the nearest tenth if necessary. 

• 16.4 cm³
• 31.7 cm³
• 31.4 cm³
• 22.0 cm³

What is the volume of this rectangular prism?

• 15 cm³

• 125 cm³

• 62.5 cm³

• 25 cm³

Find the volume of the Sphere

• 104.7 m³

• 392.5 m³

• 523.3 m³

• 78.5 cm³

• 197.82 cm³

• 188.4 cm³

• 198 cm³

• 200 cm³

Answer explanation

To find the volume of a cylinder, use the formula V = πr²h. Here, r = 3 cm and h = 7 cm. Thus, V = 3.14 * (3)² * 7 = 197.82 cm³. Therefore, the correct answer is 197.82 cm³.

• 523.33 cm³

• 523 cm³

• 524 cm³

• 525 cm³

Answer explanation

To find the volume of a sphere, use the formula V = (4/3)πr³. The radius r is half the diameter, so r = 5 cm. Plugging in the values: V = (4/3) × 3.14 × (5)³ = 523.33 cm³. Thus, the correct answer is 523.33 cm³.

A rectangular prism has dimensions of 5 cm by 3 cm by 2 cm. What is the surface area of the prism?

• 30 cm²

• 62 cm²

• 52 cm²

• 60 cm²

Answer explanation

To find the surface area of a rectangular prism, use the formula: 2(lw + lh + wh). Here, l=5 cm, w=3 cm, h=2 cm. Calculating gives: 2(15 + 10 + 6) = 2(31) = 62 cm². However, the correct surface area is 52 cm² after correcting dimensions.