Các câu hỏi tương tự
Water well head is a circle with a radius of 0.7m. It is built into wells surrounding the well head 0.3m wide. Calculate the area of the wells.
The area of the circle is 47.1cm2. find the area of square?
the area of a rectangle is 7232 cm2.the area of a circle is 5346 cm2. the sum of area of this rectangle and this circle is...dm2
The perimeter of a circle is15,7.It's area is
the primeter of a circle is 15.7dm . it is area is ... cm2
The diagram shows a circle and 2 quater circles in a square.
Find the area of the shaded region.
(Take n=3.14)
1: the perimeter of a circle is 15,7 dm. Its's area is...cm2
2: 47/250 dm3=...cm3
a. The area of a trapezoid is 20m the larger base is 55dm and the smaller base is 45dm. Find the height of trapezoid.
b. Find the average of two bases of the trapezoid, known that: the area of trapezoid is 7 m2 and its height is 2m.
A rectangular field has a width of 24.5m and its area equals the area of a square with the sides of 35m. Find the perimeter of that rectangular field.