The diameter of the street garden is 6 meters. Now we plan to build a 2 meter wide path around the garden. How many square meters is the area of this path?

The diameter of the street garden is 6 meters. Now we plan to build a 2 meter wide path around the garden. How many square meters is the area of this path?


This road is a ring, and the area of the ring is equal to the area of the big circle minus the area of the small circle
Small circle radius 6 divided by 2 = 3M
Big circle radius 3 + 2 = 5m
Large circle area: 3.14x5x5 = 78.5m2
Small circle area: 3.14x3x3 = 28.26 square meters
Road area: 78.5-28.26 = 50.24 square meters



There is a circular fountain in the park, with a diameter of 10 meters. A 1 meter wide circular ceramic tile road is paved around it. What is the area of this ceramic tile Road?


10 △ 2 = 5 (meters), 5 + 1 = 6 (meters), so the area of the path is: 3.14 × (62-52) = 3.14 × (36-25) = 3.14 × 11 = 34.54 (square meters); answer: the area of this tile road is 34.54 square meters



A round flower stand, its diameter is 8 meters, around it is a 1 meter wide circular path. How many square meters is the area of the circular path? Please


3.14 * (5 * 5-4 * 4) = 28.26 square meters



A round lotus pond, 40 meters in diameter, has a 2-meter-wide path around it. How many square meters is the area of this path?


The area of lotus pond + path = π × 22 square
Area of lotus pond = π × 20 square
Area of path = 84 π



Build a 0.8 meter wide circular path around a 5 meter diameter flower bed. What's the area of the path


Area of path and flower bed
3.3*3.3*π=10.89π
Area of flower bed
2.5*2.5*π=6.25π
The area of the path is 10.89 π - 6.25 π = 4.74 π = 14.5696 (M2)



Lay a 2m wide road around a round flower bed with a diameter of 10m to calculate the area of the road


10 △ 2 = 5 (meters), 5 + 2 = 7 (meters), 3.14 × (72-52), = 3.14 × (49-25), = 3.14 × 24, = 75.36 (square meters). A: the area of this path is 75.36 square meters



Trapezoidal area of 160 square meters, X meters high, 15 meters at the bottom, 25 meters at the bottom, how to use the equation to solve


(15+25)*X/2=160
x=8



A trapezoid, the area is 160 square meters, the bottom is 60 meters more than the top, how high is it?


S ladder
=(upper bottom + lower bottom) * height / 2
=(2 upper sole + 60) * height / 2
=(upper sole + 30) * high
=160
It's missing a few
So there is no solution
Or there are countless solutions



A trapezoid, with an area of 160 square meters, has an upper bottom of 50 meters, and a lower bottom of 60 meters more than the upper bottom. How high is it?


The bottom is 50 + 60 = 110m
According to the trapezoidal area formula s = (upper bottom + lower bottom) * height / 2
therefore
160=(110+50)*H/2
So it's 2 meters high



The area of trapezoid is 320 square meters, the upper bottom is 75 meters, the lower bottom is 25 meters, how many meters is the height?
What is the equivalence in the title


S = 1 / 2 * (upper bottom + lower bottom) * high
Height = 6.4