Perimeter and circumference
What represents perimeter, the amount of grass that a cow can eat or the fence that keeps her inside?
The fence is a better representation of perimeter.
What is the area of a rectangle with length 10 cm and width 3 cm?
Answer: 30 cm²
What is the area of a circle with radius 3 cm?
Use π = 3.14.
Answer: 28.26 cm²
A shape is made of two rectangles side by side: one is 4 cm by 3 cm and the other is 4 cm by 5 cm. What is the total area?
Answer: 32 cm²
How many sides does a hexagon have?
6 sides
A triangle has a height of 4 cm, a base of 3 cm and a hypotenuse of 5 cm. What is its perimeter?
Answer: 12 cm
Find the area of a triangle with a base of 8 cm and a height of 5 cm.
Answer: 20 cm²
Find the area of a circle with a diameter of 10 cm. Use
pi = 3.14.
Answer: 78.5 cm²
A rectangular garden is 8 m by 6 m, with a 2 m by 2 m shed in one corner. What is the area not covered by the shed?
Answer: 44 m²
How many degrees is an obtuse angle?
Find the circumference of a circle with a radius of 5 cm. Use π = 3.14.
Answer: 31.4 cm
A parallelogram has a base of 12 cm and a height of 7 cm. What is its area?
Answer: 84 cm²
An isosceles triangle has a base of 4 cm, a height of 7 cm and two sides that measure 9 cm each. What is the area of the triangle?
Answer: 14 cm²
A composite shape is made of a semicircle on top of a 6 cm by 4 cm rectangle. The diameter of the semicircle matches the 6 cm side. What is the total area? Use π = 3.14.
Answer: 38.42 cm²
What do you call a triangle that has three sides of all different lengths?
Scalene Triangle
A basketball court has a diameter of 6 m and a height of 15m find the perimeter of the basketball court.
Use the image drawn here:
Answer: 45.42 m
The area of a rhombus is 48 cm² and its base is 6 cm. What is its height?
Answer: 8 cm
A circle has an area of 50.24 cm². What is its radius? Use π = 3.14.
Answer: 4 cm
A shape is made by attaching a triangle (base 6 cm, height 4 cm) to the top of a square with side length 6 cm. What is the total area?
Answer: 48 cm²
If 3x + 5 = 20, what is x?
5
A semi-circle has a radius measuring 9 cm. What is its perimeter?
9 x 2 = 18 cm
3.14 x 18 / 2 = 28.26cm
Perimeter = curved side plus straight edge
Perimeter = 28.26+18= 46.26cm
A trapezoid has parallel sides of 10 cm and 6 cm, and a height of 5 cm. What is its area?
Answer: 40 cm²
Find the area of a baseball diamond.
The distance from home base to first base is 13 feet. The distance from home base to third base is also 13 feet. The distance from 1st base to 3rd base is 18 feet.
Answer: 112.76 ft²
A rectangle (10 cm × 8 cm) has a semicircle cut out of one of the 10 cm sides. The semicircle’s diameter is 10 cm. What is the remaining area? Use π = 3.14.
Answer: 48.6 cm²
In a bag of 24 lollies, ⅜ of them are red. How many red lollies are there?
9