英文字典,中文字典,查询,解释,review.php


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       


安装中文字典英文字典辞典工具!

安装中文字典英文字典辞典工具!










  • Question #98679 - Socratic
    The area of the circle is 9picm^2 or 28 26cm^2 From the perimeter (circumference) of a circle, we can calculate the radius, which we can then use to calculate the area of the circle The formula for circumference of a circle is: C=2pir, where C=Circumference, and r=radius Using the given data: 6pi=2pir Cancel the like terms on both sides 6cancelpi=2cancelpir Divide both sides by 2 3=r Now
  • A triangle has corners at (4 ,6 ), (2 ,9 ), and (8 ,4 ). What is the . . .
    Area of circumscribed circle is 194 5068 If the sides of a triangle are a, b and c, then the area of the triangle Delta is given by the formula Delta=sqrt (s (s-a) (s-b) (s-c)), where s=1 2 (a+b+c) and radius of circumscribed circle is (abc) (4Delta) Hence let us find the sides of triangle formed by (4,6), (2,9) and (8,4) This will be surely distance between pair of points, which is a=sqrt
  • A triangle has corners at (6 ,8 ), (1 ,2 ), and (3 ,9 ). What is the . . .
    Area of the triangle's circumscribed circle is 48 005 If the sides of a triangle are a, b and c, then the area of the triangle Delta is given by the formula Delta=sqrt(s(s-a)(s-b)(s-c)), where s=1 2(a+b+c) and radius of circumscribed circle is (abc) (4Delta) Hence let us find the sides of triangle formed by (6,8), (1,2) and (3,9) This will be surely distance between pair of points, which is
  • A triangle has corners at # (2 , 9 )#, # (3 ,9 )#, and # (4 . . . - Socratic
    Area of a triangle equals to half of a product of its perimeter by a radius of an inscribed circle: let #p= (a+b+c) 2# and #r# is a radius of an inscribed circle, then #S=p*r# The derivation of both formulas for area of a triangle can be found in the course of advanced mathematics at Unizor These two expressions for an area must be equal, therefore
  • Circumference and Area of Circles - Socratic
    Questions What is the circumference of a 15-inch circle if the diameter of a circle is directly proportional to its radius and a circle with a 2-inch diameter has a circumference of approximately 6 28 inches? If the radius of a circle is 4cm, what is the area? How do you find the circumference of a circle with a diameter of 6 cm? How much will it cost to paint a circular sign with a radius of
  • Circle A has a center at # (2 ,7 )# and an area of #81 pi#. Circle B . . .
    color(blue)("Circles intersect") First we find the radii of A and B Area of a circle is pir^2 Circle A: pir^2=81pi=>r^2=81=>r=9 Circle B: pir^2=36pi=>r^2=36=>r=6 Now we know the radii of each we can test whether they intersect, touch in one place or do not touch If the sum of the radii is equal to the distance between the centres, then the circles touch in one place only If the sum of the
  • A solid consists of a cone on top of a cylinder with a . . . - Socratic
    V_T=pir^2 (h_1 3+h_2) We need to calculate r in order to calculate the area of the base of the cylinder, hence we fill in the data given 150pi=pir^2 (39 3+17) We cancel the like term (pi) on each side 150cancelpi=cancelpir^2 (39 3+17) 150=r^2 (13+17) 150=r^2xx30 Divide both sides by 30 150 30=r^2 5=r^2 The formula of area of the base of a
  • A triangle has corners at # (3 , 2 )#, # (6 ,7 )#, and # (2 . . . - Socratic
    A triangle has corners at # (3 , 2 )#, # (6 ,7 )#, and # (2 ,4 )# What is the radius of the triangle's inscribed circle? GeometryCirclesArea of Inscribed Triangle


















中文字典-英文字典  2005-2009