A 2m wide path is built on the periphery of a circular flower bed with a diameter of 18m. The area of the path is

A 2m wide path is built on the periphery of a circular flower bed with a diameter of 18m. The area of the path is

The diameter of the outer circle is 20 cm and the radius is 10 cm
The area of this path is:
3.14x(10²-9²)
=3.14x19
=59.66m²
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A round flower bed covers an area of 50.24 square meters. Now we need to build a circular path with a width of 1.5 meters outside the flower bed. What is the area of the path
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50.24÷3.14=16=4²
The radius of the round flower bed is 4 meters
Area of circular path = large circle area - small circle area = 3.14x (4 + 1.5) &# 178; - 3.14x4 & # 178; = 3.14x5.5 & # 178; - 3.14x4 & # 178; = 44.745m2

There is a round flowerbed. Now we need to build a 1 meter wide circular path around the flowerbed
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Let R be the radius of flower bed
Path area = 3.14 (R + 1) ^ - 3.14r^
Where ^ means square

A round flower bed with a circumference of 25.12 meters has a 2 meter wide path around it. How many square meters is the area of this path?

The radius of the round flower bed: 25.12 △ 3.14 △ 2 = 4 (meters), the radius of the big circle: 4 + 2 = 6 (meters), the area of the path: 3.14 × (62-42), = 3.14 × (36-16), = 3.14 × 20, = 62.8 (square meters), a: the area of the path is 62.8 square meters

A school has a round flower bed with a circumference of 31.4 meters. A 1 meter wide path is paved along the flower bed. How many square meters is the area of the path?
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31.4 / 3.14 = 10m
3.14 * (10 / 2 + 1) (10 / 2 + 1) - 3.14 * (10 / 2) (10 / 2) = 34.54 square meters

The circular flower bed is surrounded by a circular path with a diameter of 10 meters and a width of 2 meters. How many square meters does this circular path cover?

3.14 × (10 ／ 2 + 2) 2-3.14 × (10 ／ 2) 2, = 3.14 × 49-3.14 × 25, = 3.14 × (49-25), = 75.36 square meters; a: this Circular Road covers an area of 75.36 square meters

A 1.2m-wide circular path is built around the outer surface of a circular flower bed with a diameter of 6m. What is the floor area of the path?

This is the radius of the circular flower bed: 6 △ 2 = 3 meters, 3 × 3 × 3.14 = 28.26 square meters, 1.2 + 3 = 4.2 meters, 4.2 × 4.2 × 3.14 = 55.3896 square meters. The final answer is: 55.3896-28.26 = 27.1296 square meters. This is the first kind of more complex, there is another kind: 6 △ 2 = 3 meters, 1.2

The circular flower bed is surrounded by a circular path. The diameter of the flower bed is 4m and the width of the path is 2m. How many square meters does this circular path cover?

The diameter of the flower bed is 4m, the width of the path is 2m, the radius of the flower bed is - 4 △ 2 = 2 (m), the radius of the path is - 2 + 2 = 4 (m), the area of the circular path = π (R ^ 2-r ^ 2), the area of the circular path: 3.14 × (4 × 4-2 × 2) = 3.14 × (16-4) = 3.14 × 12 = 37.68 (M2). A: this circular path covers an area of 37.68 square meters

The circular flower bed is surrounded by a circular path with a diameter of 10 meters and a width of 2 meters. How many square meters does this circular path cover?

3.14 × (10 ／ 2 + 2) 2-3.14 × (10 ／ 2) 2, = 3.14 × 49-3.14 × 25, = 3.14 × (49-25), = 75.36 square meters; a: this Circular Road covers an area of 75.36 square meters

The perimeter of a circular flower garden is 50.24 meters. A 2-meter-wide path is laid around it. How many square meters is the area of the path?

The radius of the small circle: 50.24 △ 2.14, = 50.24 △ 6.28, = 8 (m); the radius of the big circle: 8 + 2 = 10 (m); the area of the small road: 3.14 × (102-82), = 3.14 × (100-64), = 3.14 × 36, = 113.04 (M2); a: the area of the small road is 113.04 m2