A boy who is 1.6 m tall casts a 2.4 m shadow when he stands 8.1 m from the base of an electric light pole. How high above the ground is the light globe?
The height of the light globe is 7 m.
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15
How many edges does a cube have?
12
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lifesaver
Give 25 points!
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fairy
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25
rocket
Go to first place!
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thief
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15
The height of this office tower is...
420,48m
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seesaw
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gift
Win 20 points!
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fairy
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25
baam
Lose 10 points!
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15
What is the name of this 3D shape?
Tetrahedron
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15
An firefighter's extension ladder is leaning against a building, so its top just touches the gutters at the roof edge. You know the ladder is 41 feet long and it is 9 feet from the wall of the building. How high is the building?
The building is 40 ft.
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15
A piece of timber leaning against a wall, just touches the top of a fence, as shown. Find how far up the wall the timber reaches.