Write the missing number
40.4 × 7 = _______ × 35
On the map of a stadium, with scale 1 cm : 1.5 Km, the diameter
of the circular path is drawn to be 3.2 cm. What is the area of this
stadium in reality ?
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Answer:
The missing number is 8.08
1 cm : 1.5 km
3.2 cm : 4.8 km which is the diameter of the stadium in real life.
4.8 km / 2 = 2.4 km which is the radius of the stadium in real life.
Area = πr²
Area = 3.14*2.4²
Area = 3.14*5.76
Area = 18.0864 km² which is the area of the stadium in real life.
Hope this helps you.
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