Trades Math#2

Conversion

100

Convert 6 inches to centimetres. Express your answer to 2 decimal places

15.24 centimeters

200

Convert 7 yards to metres. Express your answer to 2 decimal places

6.40 meters

300

3 ft to cm

91.44 cm

400

Convert 3 metres to feet. Express your answer to 2 decimal places.

9.84 ft

500

Convert 2.5 kilometres to miles. Express your answer to 2 decimal places.

1.58 miles

Formulas

100

Perimeter of a square

P= 4l 

200

Perimeter of a triangle

A+B=C

300

Area of a triangle

1/2bxh

400

Volume of a cylinder

Vcyl = 3.14xr2xh

500

Area of a circle

A =3.14 x r2

Use your formulas

100

Calculate the perimeter of a square with a side length of 3.4 cm.

13.6 cm

200

Find the perimeter of a triangle with sides of length 1.4 m, 2.5 m and 3.0 m.

6.9 m

300

Find the area of a square with a side length of 3.4 cm.

6.8 cm

400

Calculate the volume of a cylinder with radius 4 ft and height 5 ft. Express your answer to 2 decimal places.

251.2 ft

500

Find the area of a triangle with a base length of 1.4 m and a height of 2.5 m

1/2bxh= 3m

Trigonometry

100

Pythagorean Theorem

C²=A²+B² 

200

tangent=

opposite / adjacent or A/B

300

Cosine

adjacent/ hypotenuse or B/C

400

sin=

opposite/hypotenuse or A/C

500

Fabricators use this term for angle measurements. Engineers use this other term for angles. They both mean the same thing.

DAILY DOUBLE*****

Degrees and radians

Definitions

100

Area

the amount of surface inside the boundaries of a two dimensional object.

200

Geometry

Branch of mathematics concerned with lines, angles and shapes

300

ratio

The result of division of one number or expression by another

400

Trigonometry

The study of triangles

500

Weight

The gravitational force exerted by the earth on an object.