Formulas
Parallelograms
Circles
Triangles
TRAPEZOIDS
101

What is the formula for the area of a squares and rectangles?

Length x width

101

Find the area when then the... Base= 6cm Height=7cm

42 cm2

101

r = 1.9 m Calculate the area of the circle.

round to 2 decimal points

You may use a calculator

11.34 m2

101

Find the area when  the... Base= 5cm Height=12cm

30cm2

101

Find the area when the... A = 7m B= 9m and the height = 5 m

40m2

202

What the formula for area of a triangle?

(Base x Height) x 0.5

202

Find the area when then the... Base= 12cm Height=9cm

108cm2

202

r = 1.3 mm Calculate the area of the circle.

Round up to 2 decimal places

You may use a calculator

5.31mm2

202

Find the area when  the... Base= 7cm Height=12cm

42cm2

202

 Find the area when the... A= 5m B= 4m and the height = 5 m

22.5 m2

303

What is the formula for area of a circle

r2 x pi

303

Find the area when then the... Base= 14cm Height=19cm

266cm2

303

r = 4.7 mm Calculate the area of the circle.

round up to 2 decimal places

You may use a calculator

69.36mm2

303

Find the area when  the... Base= 3cm Height=7cm

10.5 cm2

303

Find the area when the... A = 10m B= 9m and the height = 2 m

19 m2

404

What is the formula for area of a parallelogram?

Base x Height

404

Find the area (in cm) when then the... Base= 5inches Height=7inches

1 inch= 2.54 cm

(you may use a calculator to find cm).

88.9 cm2

404

d = 2.2 m Calculate the area of the circle.

Round up to 2 decimal places

You may use a calculator

3.80m2

404

Find the area when  the... Base= 12inches Height=24inches

144 inches2

404

Find the area when the... A = 70m B= 90m and the height = 50 m

4000m2

505

What is the formula for area of a trapezoid?

([A+B]xH)x0.5

505

Find the area (in meters )when  the... Base= 8km Height=9km

(1 km = 1000 m)

72 m2

505

d = 4.5 cm Calculate the area of the circle

Round up to 2 decimal places

You may use a calculator

15.90 m2

505

Find the area (in meters) when  the... Base= 8feet Height=10feet

1 meter= 3.28084 feet

You may use a calculator

Round up to 2 decimal places please

12.19 m2

505

Find the area when the... top = 7.3m bottom= 9.3m and the height = 5.3 m

Round up to 2 decimal places

43.99 m2