Question

There is a cicular plot of radius 21 m a circular seating space is constructed at the centr of the plot at total cost 231 at rs. 6 per square meter. What is the area of the remaning part or the plot

Answer 1

Answer:

Area of circular plot== πr 2 =

22/7x21^2 = 1386m2

Area of seating spot=231/6=38 1/2

= 38.5m2

Area remaining=1386-38.5=1347.5

Ans: 1347.5m2

Answer 2

The area of remaining part of the plot would be 1374.5 sq. m.

Step-by-step explanation:

Since we have given that

Total cost of seating space= 231

Cost per square meter = 6

So, Area of seating space would be

$\dfrac{231}{6}=38.5\ m^2$

Radius of plot = 21 m

Area of plot would be

$\pi r^2\\\\=\dfrac{22}{7}\times 21\times 21\\\\=22\times 21\times 3\\\\=1386\ m^2$

So, Area of remaining part of the plot would be

$1386-38.5\\\\=1347.5\ m^2$

Hence, the area of remaining part of the plot would be 1374.5 sq. m.

# learn more:

A circular track of width 2m is laid outside a cicular park of radius 18m. If the cost of laying the path is rs 8000/ square meter , find the total cost involved in laying the path.

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