Perimeter
A square that's 4cm long on each side
16
The formula for the area of a square?
A = s X s or s2
First divide by 100 then 1000
OR divide by 100,000
Length = 4cm
Height = 5cm
20 cm square
A square garden has a side length of 7m. What is its perimeter?
28m
A triangle that's 9 centimeters on each side
27
Formula for the area of a rectangle?
Convert 2.5km to cm
250, 000
Length = 90mm
Height = 6 cm
54 cm square
A school wants to put fencing around a running track. The track is 8m long and 300cm wide. How many meters of fencing do they need to buy?
22m
A rectangle with the sides
8cm, 12cm, 8cm, 12cm
40
Formula for the area of a triangle?
A = 1/2 bh = bh/2
Find the perimeter of a rectangle with a length of 20mm and a width of 4.5cm answer in cm
13cm
Length = 0.08 km
Height = 700 mm
answer in m
56m square
Maya is repainting one wall in her bedroom that measures 5m long and 3m high. If it costs $2 per square m, how much money will she spend?
Area = 15m2
Therefore she will spend $30
A pentagon that's 7cm on each side
35
Where does the formula for area of a triangle come from?
Every triangle is essentially half of a rectangle (or parallelogram) with the exact same base width and vertical height.
Find the perimeter of a triangle with: answer in cm
side 1: 24cm
side 2: 0.5m
side 3: 200mm
Side 1: 24 cm, Side 2: 50cm, Side 3: 20cm
P = 94cm
A rectangle has a total area of 64cm square. If its length is 160mm, what is its width in meters?
Width = 4 cm = 0.04m
A rectangular school playground measures 0.04km long and 2500cm wide. What is the area and perimeter? answer in m
Area = 1000m2
Perimeter 130m
An octagon that's 12cm on each side
108
What is the formula for area of a trapezium? !!make sure to explain what the letters stand for
A= (a+b) * h
2
A trapezium has parallel sides measuring 65mm and 0.12m, and a perpendicular height of 4cm. What is its area in cm?
37 cm square
A right-angled triangle has an area of 45 cm2. If its vertical height is 9cm, what is the length of its base in millimetres?
Base = 10cm or 100mm
A park consists of two connected sections: a rectangular lawn measuring 0.03km by 20m, and a right-angled triangular garden attached to one end with a base of 1500cm and a height of 20m.
What is the total area? in m
Area = 750m2