Question

find the area of a circular football ground whose diameter is hundred metre​

Answer 1

Answer:

d=100

r= 50

area = 2πr

= 2×22/7×50

2200/7= 314.28

please mark as BRAINLIEST

Answer 2

Given :-

Diameter of a circular field = 100m

To find :-

Area of the field

Formula to use :-

Area = $\pi r^{2}$

Radius = $\dfrac{1}{2}$ × Diameter

Therefore,

Radius = $\dfrac{1}{2} \times 100$

=> $\dfrac{1}{\not2} \times \not100$

=> Radius = 50m

By using the formula,

Area of the field = $\pi \times 50^{2}$

=> $\pi \times 50 \times 50$

Value of $\pi$ is $\dfrac{22}{7}$ or 3.14]

=> $\dfrac{22}{7} \times 2500$

=> $\dfrac{55000}{7}$

=> 7857.143m² (approx)

(or)

3.14 × 2500

=> 7850m²

Some more formula :-

Area of triangle = $\dfrac{1}{2}$ × base × height

Area of square = (side)²

Area of rectangle = length × breadth

Area of parallelogram = base × height

Area of rhombus = $\dfrac{1}{2}$ × Diagonal 1 × Diagonal 2

Area of trapezium = $\dfrac{1}{2}$ × height × (sum of parallel sides)