Mr G Shapes, Perimeter, and Area

What is the name of a shape with 6 sides?

• heptagon

• octagon

• pentagon

• hexagon

Answer explanation

A shape with 6 sides is called a hexagon. Therefore, the correct choice is 'hexagon'.

How many edges does a cube have?

• 10

• 6

• 8

• 12

Answer explanation

A cube has 12 edges. Each face of a cube has 4 edges, and there are 6 faces in total, so the total number of edges is 4 * 6 = 12.

Which shape has all sides and angles equal?

• Square

• Rectangle

• Circle

• Triangle

Answer explanation

A square has all sides and angles equal, making it the shape with these properties.

Calculate the perimeter of a rectangle with sides 5cm and 8cm.

• 40cm

• 26cm

• 15cm

• 30cm

Answer explanation

To calculate the perimeter of a rectangle, add all sides. Perimeter = 2*(length + width) = 2*(5cm + 8cm) = 2*(13cm) = 26cm. Therefore, the correct answer is 26cm.

What is the formula to calculate the area of a circle?

• A = r^2

• A = 2πr

• A = 0.5πr^2

• A = πr^2

Answer explanation

The correct formula to calculate the area of a circle is A = πr^2, where A represents the area and r is the radius of the circle.

How many faces does a rectangular prism have?

• 4

• 10

• 8

• 6

Answer explanation

A rectangular prism has 6 faces: 1 top face, 1 bottom face, and 4 side faces. Therefore, the correct answer is 6.

What is the name of a shape with 5 sides?

• hexagon

• pentagon

• octagon

• decagon

Answer explanation

A shape with 5 sides is called a pentagon, making it the correct choice among the options provided.

What is the measure of a right angle?

• 90 degrees

• 180 degrees

• 45 degrees

• 60 degrees

Answer explanation

A right angle measures 90 degrees, making the correct answer choice 90 degrees.

Find the circumference of a circle with radius 4cm.

• 16π cm or approximately 50.27 cm

• 8π cm or approximately 25.13 cm

• 6π cm or approximately 18.85 cm

• 12π cm or approximately 37.70 cm

Answer explanation

The circumference of a circle is calculated using the formula 2πr. Substituting r=4cm, we get 2π*4 = 8π cm or approximately 25.13 cm.

What is the formula to calculate the volume of a cube?

• V = a^2

• V = 6a

• V = a^3

• V = 4a

Answer explanation

The formula to calculate the volume of a cube is V = a^3, where 'a' represents the length of the side of the cube