The area of a rectangle is given by: `A = bh`

where A is the area, *b* = base length and *h* is the height.

A rectangle that is 8 units along its base length, and 4 units high, has an area of 32 units square.

Area units are squared: for example, a rectangle of 5 cm x 3 cm has an area of 15 cm^{2}.

What is the area of a rectangle with a base length of 15.5 cm and a height of 4 cm?

Area | = base x height |

= 15.5 x 4 | |

= 62 cm^{2} |

Remember the answer is in cm^{2}

Answer: 62 cm^{2}

One side of a rectangular building is completely covered in glass. The area of the glass is 550 m^{2}. If the building is 55m long, how tall is the building?

Area | = base x height | |

Substitute: | 550 | = 55 x h |

Divide both sides by 55: | 550 รท 55 | = h |

10 | = h |

Answer: 10m

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