Around a round pool with a diameter of 10 meters, build a stone road with a width of 1 meter. What is the area of this stone road?

Around a round pool with a diameter of 10 meters, build a stone road with a width of 1 meter. What is the area of this stone road?

10 △ 2 = 5 (m) 5 + 1 = 6 (m) 3.14 × (62-52) = 3.14 × (36-25) = 3.14 × 11 = 34.54 (M2). A: the area of this stone road is 34.54 m2

The diameter of a circular pool is 20 meters. A fence is built around the pool. A circular path with a width of 4 meters is built around the pool. What is the length of the fence? What is the area of the path

20 / 2 + 4 = 14 m 3.14 * 14 * 14 = 615.44 M2 20 / 2 = 10 m 3.14 * 10 * 10 = 314 M2 615.44-314 = 301.44 M2 3

Around a round pool with a diameter of 10 meters, build a stone road with a width of 1 meter. What is the area of this stone road?

10 △ 2 = 5 (m) 5 + 1 = 6 (m) 3.14 × (62-52) = 3.14 × (36-25) = 3.14 × 11 = 34.54 (M2). A: the area of this stone road is 34.54 m2

There is a y-meter-wide circular path around a 10 meter diameter circular pool. What is the area of the path?

Pool area S1 = 5 * 5 * π
Total area of pool + path: S = (5 + y) ^ 2 * π
Path area S2 = s-S1 = (5 + y) ^ 2 * π - 5 * 5 * π

Build a 1-meter-wide stone road around a pool with a diameter of 8 meters. How many square meters is the area of this stone road?

The radius of inner circle is: 8 △ 2 = 4 (m); 3.14 × [(4 + 1) 2-42] = 3.14 × [25-16] = 3.14 × 9 = 28.26 (M2). Answer: the area of stone road is 28.26 m2

A pool with a diameter of 10 meters is surrounded by a circular road with a width of 3 meters. How many square meters is the area of this road?

10 △ 2 = 5 (m), 5 + 3 = 8 (m), so the area of the path is: 3.14 × (82-52), = 3.14 × (64-25), = 3.14 × 39, = 122.46 (M2). A: the area of the path is 122.46 m2

A round pool with a diameter of 10 meters is surrounded by a 2-meter-wide path. How many square meters is the area of the path?

What's the radius of the pool
10 △ 2 = 5 (m)
What is the outer radius of the path
5 + 2 = 7 (m)
What is the area of the path
7 × 7 × 3.14-5 × 5 × 3.14 = 75.36 (M2)

A circular pool with a radius of 8 meters, surrounded by a 2 meter wide path. What is the area of this path?

What is the outer radius of the path
8 + 2 = 10m
What is the area of the path
10 × 10 × 3.14-8 × 8 × 3.14 = 113.04 square meters

For a round pool, a 1-meter-wide path should be paved around it. How many square meters is the area of the path?

Radius of inner circle: 4 △ 2 = 2 (m), area of path: 3.14 × (1 + 2) 2-3.14 × 22 = 3.14 × (32-22) = 3.14 × 5 = 15.7 (M2); answer: area of path is 15.7 m2

There is a round pool in Zhengzhou Green Expo Park, which is surrounded by a 1 m wide circular cobble path with a length of 62.8 M
There is a round pool in Zhengzhou Green Expo Park, which is surrounded by a 1 m wide circular cobblestone path with a length of 62.8 m inside. What is the area of the pool in square meters?

The inside length of the path is the circumference of the circle
Area: 62.8 ﹣ 3.14 ﹣ 2 = 10 (m) 10 × 10 × 3.14 = 314 (cm2)