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A rectangular flower garden is 14 meters long and 10 meters wide. ①: how many meters of fence is needed to fence around the flower garden. ②: if a one meter wide fence is built around the flower garden A rectangular flower garden is 14 meters long and 10 meters wide. ①: how many meters of fence is needed to fence around the flower garden. ②: if a 1 meter wide path is built around the flower garden. How many square meters is the area of the path?
A rectangular flower garden is 14 meters long and 10 meters wide. ①: how many meters (14 + 10) × 2 = 48 are needed to fence around the flower garden. ②: if a 1 meter wide path is built around the flower garden, how many square meters is the area of the path? (14 × 1 + 10 × 1) × 2 = 48 square meters
In the rectangular flower garden around a fence. The width of the fence is 15 meters, the length of the fence is 2% more than the width, how many meters is the total length of the fence?
Because the width of the fence is 15 meters, the length is 2% more than the width, that is, the width is 15 * 2% = 0.3 (meters), so the length of the fence should be 15 + 0.3 = 15.3 meters
Fence length = (15 + 15.3) × 2 = 60.6 (m)
A: (omitted)
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The diameter of the circular flower bed is 9 meters. There is a fence around it. How long is the fence? What is the area of the flower bed?
C = 2 π r = π d = 3.14 * 9 = 28.26 area: π * r * r = 3.14 * 3 * 3 = 28.26
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