Formulas
Area of Rectangles and Parallelograms
Area of Triangles and Trapeziums
Circles
Mixed Maths Questions
100
What is the area formula for a rectangle?
A = l x w OR A = b x h
100
What is the area of a rectangle with a base of 3cm and a height of 10cm?
30cm2
100
Find the area of the triangle.
21 in2
100
What's the relationship between a radius and the diameter of a circle?
radius: half the diameter
diameter: twice the radius
100
Round 1637.48372 to 3 decimal places
1637.484
200
Area of a parallelogram
A = b x h
200
Find the area of the parallelogram with a base of 10m and a height of 12m.
120m2
200
Find the area of the trapezium shown.
1,560 ft2
200
Work out the circumference of a circle that has a diameter of 6cm. Answer correct to 2dp
18.85cm
200
Percentages!
Work out 76% of 98
74.48
300
What is the formula for area of a triangle?
A = 1/2 x b x h or A = (b x h)/2
300
Find the area of the rectangle.
36.54 ft2
300
What is the area of a triangle if the base is 3.5 cm and the height is 7 cm?
A = 12.25 cm2
300
Work out the area of a circle with a radius of 5cm. Answer correct to 2dp
31.42cm2
300
Simplify the following ratio
56:94
28:47
400
What is the formula for the circumference of a circle?
C = πD or 2πr
400
Find the area of the parallelogram with a base of 13.5m and a height of 12.5m
168.75m2
400
What is the area of a triangle if the base is 5 cm and the height is 10 cm?
A = 25 cm2
400
Find the circumference of a circle with a radius of 3cm. Round your answer to 2 decimal places.
18.85cm
400
Percentages!
Decrease $130 by 25%
$97.50
500
What is the formula for the area of a quadrant?
A = 1/4 x π x r2
500
What is the height of a rectangle with base 11cm and an area of 132cm2
12cm
500
Area please!
136 cm2
500
Find the area of a circle with a diameter of 10m, rounding your answer to 2 decimal places.
78.54m2
500
What is the formula for the difference of 2 squares
(a+b)(a-b)
1000
What is the formula for the perimeter of a sector?
a=(2πr x theta/360) + straight sides
1000
What is the base of a parallelogram with a height of 15m and an area of 90m2?
6m
1000
Find the area of the unshaded area, given that the quadrilateral is a square with side length 2 and the triangle's height is 1.6.
2.4 units2
1000
Find the perimeter of a semicircle with a diameter of 12 cm. Round your answer to 2 decimal places.
30.85 cm
1000
Rounding!
Round 0.0528 to 1 significant figure.
0.06