Area and Perimeter

Question 1

What is the perimeter?

Answer 1

The perimeter is the sum of all the surrounding sides of a shape.

Question 2

What is the area?

Answer 2

The area is the sum of the interior area of a shape (measured in square units).

Question 3

What is the area of a rectangle?

Answer 3

Area = Length x Width.
A = LW.

Question 4

What is the area of a triangle?

Answer 4

Area = 1/2 x Width x Perpendictular height.
A = 1/2BH

Question 5

What is the area of a parallelogram?

Answer 5

Area = Base x Perpendicular height.
A = BH.

Question 6

What is the area of a trapezium?

Answer 6

Area = 1/2 x (sum of parallel sides) x Perpendicular height.
A = 1/2(a+b)H.

Question 7

What is the area of a rhombus?

Answer 7

Area = 1/2 x (products of diagonals).
A = 1/2(x+y).

Question 8

What is the area of a kite?

Answer 8

Area = 1/2 x (products of diagonals).
A = 1/2(x+y).

Question 9

Find the area of a triangle with the base length of 24cm and a height of 16 cm.

Answer 9

A = 1/2BH
A = 1/2 x 24 x 16
A = 192cm^3

Question 10

Find the area of a triangle with the base length of 43m and a height of 36m.

Answer 10

A = 1/2BH
A = 1/2 x 43 x 36
A = 774m^3

Question 11

Find the area of a square with a length of 12cm and a height of 12cm.

Answer 11

A = LW
A = 12 x 12
A = 144cm^3

Question 12

Find the area of a rectangle with a length of 36m and a height of 24m.

Answer 12

A = LW
A = 36 x 24
A = 864m^3

Question 13

Find the area of a parallelogram with a base length of 11cm and a height of 9cm.

Answer 13

A = BH
A = 11 x 9
A = 99cm^3

Question 14

Find the area of a parallelogram with a base length of 25m and a height of 12m.

Answer 14

A = BH
A = 25 x 12
A = 300m^3

Question 15

Find the area of a trapezium with parallel sides of 12cm and 15cm respectively and a height of 19cm.

Answer 15

A = 1/2(a+b)H
A = 1/2(12 + 15) x 19
A = 256.5cm^3

Question 16

Find the area of a trapezium with parallel sides of 25m and 36m respectively and a height of 17m.

Answer 16

A = 1/2(a+b)H
A = 1/2(25 + 36) x 17
A = 518.5m^3

Question 17

Find the area of a rhombus with the diagonals of 15cm and 22cm.

Answer 17

A = 1/2xy
A = 1/2(15 + 22)
A = 18.5cm^3

Question 18

Find the area of a kite with the diagonals of 30m and 39m.

Answer 18

A = 1/2xy
A = 1/2(30 + 39)
A = 34.5m^3

Question 19

How do you find the area of a circle?

Answer 19

A = πr^2
Area = pi x radius^2

Question 20

How do you find the circumference of a circle?

Answer 20

A = πd^2
Area = pi x diameter^2

Question 21

Find the circumference of a circle with a radius of 5 meters.

Answer 21

A = 2πr
A = 2 x π x 5
Circumference = 31.41 m

Question 22

Find the circumference of a circle with the diameter of 43 centimeters.

Answer 22

A = πd
A = π43
Circumference = 135.09m

Question 23

Find the circumference of a circle with the radius of 12km

Answer 23

A = 2πr
A = 2 x π x 12
Circumference = 75.40km

Question 24

Find the area of a circle with a radius of 6cm

Answer 24

A = πr^2
A = π x 6^2
Area = 113.10cm

Question 25

Find the area of a circle with a diameter of 20m

Answer 25

``` A = π1/2d^2 A = π x 10^2 Area = 314.16m ```

Question 26

Find the area of a circle with a radius of 15m

Answer 26

``` A = πr^2 A = π x 15^2 Area = 706.86m ```

Question 27

Find the surface area of a cube with equal sides of 5cm.

Answer 27

Surface Area = 5^2 x 6. | Surface Area = 150cm^2.

Question 28

Find the surface area of a cube with equal sides of 15mm

Answer 28

Surface Area = 15^2 x 6 | Surface Area = 1350mm^2

Question 29

How do you find the volume of cylinders?

Answer 29

πdh | = π x diameter x height.

Question 30

What is the cross section?

Answer 30

The cross section is the shape in the middle of a prism.

Question 31

How do you find the volume of prisms?

Answer 31

Area of base x height.