ĐąĐľ filled will12.3. An athletic track 21 m wide consists oftwo s

1.	ĐąĐľ filled will12.3. An athletic track 21 m wide consists oftwo straight sections 150 m long joiningsemicircular ends whose diameter are84 m each (see figure). Find the area ofthe track. (Use T-2 and 31.73]
Answer» For us to get this area, we need to draw the diagram and analyze the shapes that are within the diagram. In this case, the diagram consists of a rectangle of 150m by 21m and two semicircles of diameter 84m. Area of rectangle =21×150=3150m2 Area of semicircles=3.142 × 42 ×42=5538.96m2 Total area =5538.96+3150=8688.96m2 wrong answer 10458m2

ĐąĐľ filled will12.3. An athletic track 21 m wide consists oftwo straight sections 150 m long joiningsemicircular ends whose diameter are84 m each (see figure). Find the area ofthe track. (Use T-2 and 31.73]

Answer»

For us to get this area, we need to draw the diagram and analyze the shapes that are within the diagram.

In this case, the diagram consists of a rectangle of 150m by 21m and two semicircles of diameter 84m.

Area of rectangle =21×150=3150m2

Area of semicircles=3.142 × 42 ×42=5538.96m2

Total area =5538.96+3150=8688.96m2

wrong answer 10458m2