1. Mathematics - Q&A

What is the area (including the ends) of a cylinder diameter 10 cm and 10 cm in height?

• 50pi
• 100pi
• 150pi

10111 base 2 - 1001 base 2 =

• 1100 base 2
• 1110 base 2
• 1010 base 2

What is the surface area of a cylindrical pipe of length 150 cm and diameter 5cm?

• 750pi cm^2
• 1500pi cm^2
• 3750pi cm^2

If 42% = 15000, what is 100%?

• 6300
• 21300
• 35714

The mode of the following 28, 17, 34, 28, 34, 35, 28, 40 is

• 28.0.
• 30.5.
• 31.0.

Express 9/20 as a percentage.

• 40%
• 45%
• 47%

A blueprint shows a hole of 0.3751 to be drilled. What fraction size drill bit is most nearly equal?

• 3/16
• 5/16
• 3/8

200 kilovolts can be expressed as

• 2 * 10^3 volts.
• 2 * 10^4 volts.
• 2 * 10^5 volts.

A cylinder has a radius of 20cm and a length of 40cm. What is its volume? (Take pi as 3.1)

• 800 cm^3
• 49600 cm^3
• 50270 cm^3

Two lines with equations y = 3x-6 and y = 3x + 4

• meet when y = 3.
• are at right angles.
• are parallel.