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.
Oops!
Check
Okay!
Check
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.
At 2.67 m above the timber reaches the wall.
Oops!
Check
Okay!
Check
monster
Reset all scores!
Oops!
seesaw
Swap points!
Okay!
rocket
Go to first place!
Okay!
thief
Give points!
5
10
15
20
25
15
How many faces does a triangular prism have?
5
Oops!
Check
Okay!
Check
15
The height of the tree is...
7.68m
Oops!
Check
Okay!
Check
15
How many triangles make up an icosahedron?
20
Oops!
Check
Okay!
Check
seesaw
Swap points!
Oops!
fairy
Take points!
5
10
15
20
25
fairy
Take points!
5
10
15
20
25
lifesaver
Give 15 points!
Oops!
15
How many vertices does an octahedron have?
6
Oops!
Check
Okay!
Check
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?