Question

there is a circular flower bed of radius 30 metre there is a 10 metre wide running track around what is the area of the running track​

Answer 1

..QUESTION..

There is a circular flower bed of radius 30 m . There is also a 10 m wide running track around the flower bed . What is the area of the Track ?

..ANSWER..

Given ,

ㅤㅤㅤ➪ Radius of the flower bed = 30m

ㅤㅤㅤ➪ Width of the track = 10 m

☯︎ To find » Area of the track

°•° The radius of the bed is given

•°• Area of the flower bed

ㅤㅤㅤ➪ π r²

ㅤㅤㅤ➪ 22/7 × ( 30 )²

ㅤㅤㅤ➪ 22/7 × 900

ㅤㅤㅤ➪ ( 22 × 900 ) / 7

ㅤㅤㅤ➪ 19800 / 7

ㅤㅤㅤ➪ 2828.57

•°• Area of the flower bed = 2828.57 m²

> We are given that » track width = 10 m

•°• Radius of the bed including the track =

ㅤㅤㅤ➪ 30 m + 10 m

ㅤㅤㅤ➪ 40 m

•°• Area of the bed including track =

ㅤㅤㅤ➪ π r²

ㅤㅤㅤ➪ 22/7 × 40²

ㅤㅤㅤ➪ 22/7 × 1600

ㅤㅤㅤ➪ ( 22 × 1600 ) / 7

ㅤㅤㅤ➪ 35200 / 7

ㅤㅤㅤ➪ 5028.57

Now ,

» Track area = Total area - Bed area

➪ Track area = 5028.57 - 2828.57

➪ Track area = 2200

•°• Track area ➪ 2200 m²

_____________________

Give a look here ,

• FORMULAS

☯︎ Circumference of circle ➪ 2πr

☯︎ Area of circle ➪ π r²

☯︎ Perimeter of square ➪ 4 s

☯︎ Area of square ➪ s²

☯︎ Perimeter of rectangle ➪ 2 (l + b)

☯︎ Area of rectangle ➪ l × b

ㅤㅤㅤ꧁ ʙʀᴀɪɴʟʏ×ᴋɪᴋɪ ꧂

ㅤㅤㅤ