Gr 12 Math Lit: Ch 4.2 Perimeter and Area

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What is the unit of measurement for the perimeter of a shape?

Cubic units (e.g., cm³, m³)
Square units (e.g., cm², m²)
Ratio of length to width
Linear units (e.g., mm, cm, m, km) (correct)

How do you estimate the perimeter of a circle?

Using a ruler to measure the diameter
Using a piece of string to measure the circumference (correct)
Counting the number of sides of the circle
Calculating the area of the circle and then finding the perimeter

What is the formula for the perimeter of a rectangle?

2 × length + width
2 × length + 2 × width (correct)
length × width
length + 2 × width

What is the importance of understanding perimeter in real-life applications?

To determine the amount of material needed for a project (D) Signup and view all the answers

What is the formula for the area of a triangle?

1/2 × base × height (D) Signup and view all the answers

What is the unit of measurement for the area of a shape?

Square units (e.g., cm², m²) (A) Signup and view all the answers

How do you calculate the area of a rectangle?

Multiply length by width (C) Signup and view all the answers

What is the formula for the area of a circle?

π × radius² (C) Signup and view all the answers

What is the perimeter of a square with a side length of 5cm?

20cm (B) Signup and view all the answers

What is the area of a triangle with a base of 6cm and a perpendicular height of 8cm?

24cm² (C) Signup and view all the answers

What is the circumference of a circle with a diameter of 14cm?

44cm (A) Signup and view all the answers

What is the area of a rectangle with a length of 8cm and a width of 5cm?

35cm² (A) Signup and view all the answers

What is the perimeter of a triangle with sides of 5cm, 6cm, and 7cm?

18cm (C) Signup and view all the answers

What is the area of a circle with a radius of 4cm?

50.24cm² (D) Signup and view all the answers

What is the perimeter of a rectangle with a length of 10cm and a width of 6cm?

32cm (C) Signup and view all the answers

What is the area of a square with a side length of 8cm?

64cm² (B) Signup and view all the answers

What is the primary method for measuring the perimeter of a triangle?

Measuring the length of each side using a ruler (B) Signup and view all the answers

What is the formula for the perimeter of a rectangle, if the length and width are equal?

Perimeter = 4 × length (D) Signup and view all the answers

What is the unit of measurement for the area of a circle?

cm² (A) Signup and view all the answers

What is the formula for the perimeter of a shape with five sides?

Perimeter = side 1 + side 2 + side 3 + side 4 + side 5 (B) Signup and view all the answers

What is the purpose of using a piece of string to measure the perimeter of a circle?

To estimate the circumference of the circle (A) Signup and view all the answers

What is the formula for the area of a rectangle with a length of 8cm and a width of 5cm?

Area = 8 × 5 (B) Signup and view all the answers

What is the formula for the perimeter of a shape with a continuous curved boundary?

Perimeter = π × diameter (A) Signup and view all the answers

What is the formula for the area of a square with a side length of 8cm?

Area = 8 × 8 (D) Signup and view all the answers