Page 107 - English Vocabulary In Use upper intermediet and advance

5 1 Numbers and shapes

Anyone who works with any branch of science or technology needs to be able to talk about
figures. Notice how the following are said in English.
28% twenty-eight per cent 10 m x 12 m ten metres by twelve metres
10.3 ten point three 1% one and two thirds
% four ninths 33 nine thirteenths or nine over thirteen
42 four squared 73 seven cubed
g4 eight to the power of four

32" C or F thirty-two degrees centigradelcelsius or fahrenheit
1,623,457 one million, six hundred and twenty-three thousand, four hundred and fifty-
seven

All scientists and technologists also need to be able to talk about shapes. Note the names of
the shapes below.
Two-dimensional shapes

pentagon

triangle

A rectangle has four right angles.
A circle is cut in half by its diameter. Its two halves can be called semi-circles.
The radius of a circle is the distance from its centre to the circumference.
Three-dimensional shapes

phere cube A pyramid
The two halves of a sphere can be called hemispheres.

Here are the four basic processes of arithmetic.
+ addition - subtraction x multiplication + division
Notice how these formulae would be read aloud.
32 Two x plus three y minus z equals three z divided by four x. or
=
2~+3y-~ -
4x Three z over four x.
6 x 7 = 42 Six times seven is forty two. or Six sevens are forty two.

102 English Vocabulary in Use