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Maths I

Area

Calculating the area of a rhombus or a kite

The area of a rhombus

The area of a rhombus is found by multiplying 1 \over 2 by the diagonal by the other diagonal.

A diamond, or rhombus, shape. The height from one corner to the opposite corner is 6 metres. The width from one corner to the opposite corner is 8.4 centimetres.

The area of a rhomus = 1 \over 2 x diagonal x diagonal

For this rhombus

= {1 \over 2} \times 8.4 \times 6

= 25.2cm^2

The area of a kite

The area of a kite is found in the same way as a rhombus, that is, by multiplying 1 \over 2 by the diagonal by the other diagonal.

A kite shape on its side. It is 8 metres in length and 2.2 metres in height.

To find the area of the kite:

Area = 1 \over 2 x diagonal x diagonal

= {1 \over 2} \times 2.2 \times 8

= 8.8cm^2

Watch

Barry and Paul Chuckle.

Class Clips

To me, to you...the Chuckle brothers learn some useful tips for measuring area

Play

A picture of Mia Cadaver

Tombstone Timeout

Swot up your sums with Mia Cadaver's maths game

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