Pyramid A and Pyramid B are similar. Pyramid A has a volume of 648 m and Pyramid B has a
volume of 1,029 m². What is the ratio of the surface area of Pyramid A to Pyramid B?​

Pyramid A and Pyramid B are similar Pyramid A has a volume of 648 m and Pyramid B has avolume of 1029 m What is the ratio of the surface area of Pyramid A to Py class=

Respuesta :

Answer:

the ratio of the surface area of Pyramid A to Pyramid B is: [tex]\frac{36}{49}[/tex]

Step-by-step explanation:

Given the information:

  • Pyramid A :  648 [tex]m^{3}[/tex]
  • Pyramid B : 1,029 [tex]m^{3}[/tex]
  • Pyramid A and Pyramid B are similar

As we know that:

If two solids are similar, then the ratio  of their volumes is equal to the cube

of the ratio of their corresponding  linear measures.

<=> [tex]\frac{Volume of A }{Volume of B}[/tex] =[tex](\frac{a}{b}) ^{3}[/tex] =  [tex]\frac{684}{1029}[/tex] = [tex]\frac{216}{343}[/tex]

<=> [tex]\frac{a}{b} =[/tex][tex]\frac{6}{7}[/tex]

Howver, If two solids are similar, then the n ratio of their surface areas is equal  to the square of the ratio of their  corresponding linear measures

<=> [tex]\frac{surface area of A}{surface area of B} =( \frac{a}{b}) ^{2}[/tex]

= [tex]\frac{36}{49}[/tex]

So  the ratio of the surface area of Pyramid A to Pyramid B is: [tex]\frac{36}{49}[/tex]