1.
Name the line that passes through the middle of a circle from one side to the other
Correct Answer
C. Diameter
Explanation
A diameter is a line that passes through the center of a circle and divides it into two equal halves. It connects two points on the circumference of the circle, passing through the middle. Therefore, the diameter is the line that passes through the middle of a circle from one side to the other.
2.
Name this shape.
Correct Answer
B. Semi-circle
Explanation
A semi-circle is a two-dimensional shape that is formed by cutting a whole circle in half along its diameter. It has a curved boundary and one straight edge. The term "semi" indicates that it is only half of a complete circle. Therefore, the given shape can be correctly identified as a semi-circle.
3.
Circumference =
Find the circumference of the circle above. (14cm diameter)
Correct Answer
A. 44cm
Explanation
The circumference of a circle can be found by using the formula C = πd, where C is the circumference and d is the diameter. In this case, the diameter is given as 14cm. Plugging this value into the formula, we get C = π(14) = 44cm. Therefore, the correct answer is 44cm.
4.
Find the area of this triangle.
Use the formula
Correct Answer
B. 12.5cm squared
5.
Find the perimeter.
(Answer with a number not a word)
Correct Answer
60cm
60
60 cm
Explanation
The perimeter is the total length of all the sides of a shape. In this case, the given answer options are all the same, which is 60 cm. This means that the perimeter of the shape is 60 cm.
6.
Find the area of the above shape.
Correct Answer
A. 71 cm2
7.
Find the area of the large circle. The 2 smaller circles are the same size.
Answer to the nearest whole number... without cm or square indice
(A number not a word!)
Correct Answer
100cm
100
100 cm
8.
Find the volume of this square prism.
3 x 3 cm base and 19cm long
Correct Answer
A. 171 cubic cm
Explanation
The volume of a square prism is calculated by multiplying the area of the base (length x width) by the height. In this case, the base has sides of 3 cm, so the area is 3 cm x 3 cm = 9 cm^2. The height or length of the prism is given as 19 cm. Multiplying the area of the base by the height, we get 9 cm^2 x 19 cm = 171 cubic cm. Therefore, the correct answer is 171 cubic cm.
9.
Find the surface area of this triangular prism
Correct Answer
A. 173.1 cm squared
Explanation
The surface area of a triangular prism can be found by calculating the area of each face and adding them together. Since the given answer is 173.1 cm squared, it suggests that the areas of all the faces of the triangular prism combined equal 173.1 cm squared.
10.
Find the volume of the triangular prism.
Answer to the nearest whole number without cm or indice.
(Write a number not a word!)
Correct Answer
720
720 cm
720
11.
What 3D object can be made with this net?
(Correct spelling please. don't use capital letters to start the words)
Correct Answer
Rectangular Pyramid
rectangle pyramid
rectangular pyramid
Explanation
The correct answer is "Rectangular Pyramid" because the net provided is a two-dimensional representation of a rectangular pyramid, which is a three-dimensional object with a rectangular base and triangular faces that meet at a single point. The other options provided are variations of the correct answer but have incorrect capitalization.
12.
This diagram shows 3 balls packed in a cylindrical container.
The diameter of each ball is 12 cm.
Calculate the volume of the container.
(answer to the nearest whole number without cm or indice)
Correct Answer
4073
4,073
4073 cubic cm