Formulas
Calculate
Area
Circles
100
What is the formula for area of a triangle?
A = 0.5 x bxh or A = bh/2
100
Find the area of the rectangle to the nearest 2 d.p
A = 4.2 x 8.7
= 36.54 ft2
100
Find the area of the parallelogram with a base of 10m and a height of 12m round to the hundredths place if necessary.
A = 10 x 12
= 120m2
100
What is radius?
Radius is half the diameter.
The distance from the middle point of a circle
200
What is the Area formula for a rectangle?
A = L x W
200
Find the area of the triangle.
A= 0.5 x 7 x 6
= 21 in2
200
What is the area of a triangle if the base is 3.5 cm and the height is 7 cm? round to the hundredths place.
A = 0.5 x 3.5 x 7
= 12.25 cm2
200
What is diameter?
The distance across the whole circle through the middle of the circle.
300
Area of a Parallelogram
A = b x h
300
Find the area of the parallelogram with a base of 13.5m and a height of 12.5m
A = 13.5 x 12.5
=168.75m2
300
What is the area of this triangle to the nearest hundredths place if necessary.
A = 0.5 x 7 x 2.9
10.15 ft2
300
What is area?
The space inside the circle
400
what is the formula for area of a square?
a=s2
or
a=lw
400
What is the area of a triangle if the base is 5 cm and the height is 10 cm?
A = 0.5 x 5 x 10
=25 cm2
400
What is the area of a triangle with a base of 15 cm and h = 8 cm?
A = 0.5 x 15 x 8
= 60cm2
400
What is the formula for area of a circle?
A=πr2
500
What is the formula for area of a circle?
a=3.14 x r2
500
ind the area of the trapezoid shown.
A= 0.5 x (36 + 68) x 30
= 1,560 ft2
500
A parallelogram has a base length of 15 meters, a height of 7 meters, and a slant height of 10 meters.
Calculate the area of the shape.
105 m2
500
Calculate the area:
r = 6
A = π x 62
= 113.04 cm2
1000
How to find the area of a trapezium?
A = 0.5 x (a +b) x h
1000
What is the area of this trapezoid?
A = 0.5 x (5 + 9) x 6
=42 m2
1000
What is the area of a trapezoid whose a = 9 cm, b = 5 i and h = 6 cm?
A = 0.5 x (9+5) x 6
= 42cm2
1000
calculate the area of the circle below:
A= π x 72
= 153.86 cm2