conversions, area, delta T practice hvac

Front

What is the formula for calculating the area of a rectangle?

Back

Area = length × width.

Front

How do you convert feet and inches to feet only?

Back

To convert, divide the inches by 12 and add to the feet. For example, 9 feet 6 inches = 9 + (6/12) = 9.5 feet.

Front

What is the area of a rectangle that measures 12 feet by 9 feet 6 inches?

Back

114 square feet.

Front

What is the formula for calculating the area of a circle?

Back

Area = π × radius².

Front

If the radius of a circle is 9, what is the area?

Back

Area = π × 9² = 28.26 cm².

Front

What is the difference between radius and diameter?

Back

The radius is half the diameter. Diameter = 2 × radius.

Front

How do you find the area of a composite figure?

Back

Divide the figure into simpler shapes, calculate the area of each, and then sum them up.

Front

What is the area of a circle with a radius of 10?

Back

Area = π × 10² = 314.16 cm².

Front

What is the area of a triangle?

Back

Area = (base × height) / 2.

Front

If a room measures 12 feet by 9 feet, what is the area?

Back

Area = 12 × 9 = 108 square feet.