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adelina 88 [10]
2 years ago
14

A square room has a floor area of 81 square meters. The height of the room is 5 meters. What is the area of one wall

Mathematics
1 answer:
VMariaS [17]2 years ago
4 0

Area of a square is side length ^2

To find the length of the side of a square from the area, that’s the square root of the area:

Length of side = sqrt(81) = 9 meters

Area of wall = length of side x height:

Area of wall = 9 x 5 = 45 square meters

Answer: 45 square meters

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Save Work out the size of angle AED.<br> b) Work out x
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x = 10°

Step-by-step explanation:

a). Since, opposite angles of a cyclic quadrilateral are supplementary angles"

   Therefore, in cyclic quadrilateral ABDE,

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   110° + m∠AED = 180°

   m∠AED = 180° - 110°

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b). AD = ED [Given]

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   m∠EAD = m∠AED = 70°

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    m∠AEB = 70° + 30°          

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    By triangle sum theorem in the large triangle,

    x° + m∠AEB + m∠EAB = 180°

    x° + 100° + 70° = 180°

    x = 180 - 170

    x = 10°

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2 years ago
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