Area and Perimeter

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Questions and Answers

A rectangular garden is 8 meters long and 6 meters wide. What is the area of the garden?

14 square meters
28 square meters
56 square meters
48 square meters (correct)

The perimeter of a square is found by squaring the length of one of its sides.

False (B)

A triangle has a base of 10 cm and a height of 7 cm. What is its area, including units?

35 square cm

The distance around a circle is called the ______.

circumference Signup and view all the answers

Match each shape with the correct formula for its area.

Rectangle = length × width Square = side² Triangle = ½ × base × height Circle = πr² Signup and view all the answers

A rectangular garden is 15 meters long and 8 meters wide. What is the length of fencing needed to enclose the garden and the area of the garden?

Perimeter: 46 meters, Area: 120 square meters (D) Signup and view all the answers

If two rectangles have the same perimeter, they must have the same area.

False (B) Signup and view all the answers

Explain why it's important to use the perpendicular height when finding the area of a triangle.

Using the perpendicular height ensures that the area calculation accurately represents the space enclosed by the triangle. The perpendicular height forms a right angle with the base, allowing the area formula ($\frac{1}{2} \times base \times height$) to correctly determine the triangle's area. Signup and view all the answers

The area of a circle is calculated using the formula $A = \pi r^2$, where 'r' represents the circle's _________.

radius Signup and view all the answers

Match the shape with the formula to calculate its area.

Square = s² Rectangle = l × w Triangle = ½ × b × h Circle = $\pi r^2$ Signup and view all the answers

Flashcards

What is Area?

The measure of the surface enclosed by a 2D shape, measured in square units.

What is Perimeter?

The total length of the boundary of a 2D shape, measured in linear units.