Gr 8 EOT - Volume and surface area
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Slide 1 - Tekstslide
What formula calculates the area of a circle?
A
lr
B
πr²
C
r² + h²
D
2πr
Slide 2 - Quizvraag
To find the shaded area, you must?
A
Add both areas together.
B
Divide inner area by outer area.
C
Subtract inner area from outer area.
D
Multiply both areas together.
Slide 3 - Quizvraag
How do you calculate the area of a trapezium?
A
Height times two bases
B
Base times height
C
Average of bases times height
D
Perimeter divided by two
Slide 4 - Quizvraag
What is a compound shape?
A
A shape made of multiple shapes
B
A single geometric figure
C
A shape with no angles
D
A shape with curved edges
Slide 5 - Quizvraag
Is a square's area always positive?
A
depends on side length
B
yes, always positive
C
no, can be negative
D
only if larger than 1
Slide 6 - Quizvraag
If one side is 5 cm, area is?
A
20 cm²
B
15 cm²
C
25 cm²
D
30 cm²
Slide 7 - Quizvraag
How do you calculate compound area?
A
Multiply areas of individual shapes
B
Average areas of individual shapes
C
Subtract areas of individual shapes
D
Add areas of individual shapes
Slide 8 - Quizvraag
What is the formula for square's area?
A
perimeter divided by four
B
length times width
C
diameter times height
D
side length squared
Slide 9 - Quizvraag
How do you find lateral area of a pyramid?
A
Base area + height
B
Sum of triangular faces' areas
C
Area of base only
D
Base perimeter × height
Slide 10 - Quizvraag
Which shape has a circular base?
A
Sphere
B
Cube
C
Pyramid
D
Cone
Slide 11 - Quizvraag
What is the surface area formula for a pyramid?
A
Base area only
B
2 × base area
C
Base area + lateral area
D
Lateral area only
Slide 12 - Quizvraag
What is the height of a cone?
A
Volume of the cone
B
Circumference of the base
C
Radius of the base
D
Distance from base to apex
Slide 13 - Quizvraag
If r=3, h=5, volume is?
A
15π
B
9π
C
30π
D
45π
Slide 14 - Quizvraag
What is the formula for the surface area of a cone?
A
2πr²
B
πr(r + l)
C
πr²h
D
πr²
Slide 15 - Quizvraag
What is the formula for cone volume?
A
πr²h
B
(1/3)πr²h²
C
2πr²h
D
(1/3)πr²h
Slide 16 - Quizvraag
What does 'l' represent in the cone formula?
A
Slant height of the cone
B
Diameter of the base
C
Height of the cone
D
Radius of the base
