Prism a is similar to prism b. the volume of prism a is 2720 cm³. what is the volume of prism b? 21,760 cm³ 1360 cm³ 680 cm³ 340 cm³

D. 340 cm³

Step-by-step explanation:

We have two figure, namely, Prism A and Prism B having side lengths 4 cm and 8 cm.

It is given that, 'the two prism are similar'.

Thus, the scale factor of the similarity is = .

So, the scale factor for the volume of the prism = = .

Since, the volume of Prism B is 2720 cm³.

Then, Volume of Prism A =

i.e. Volume of Prism A =

i.e. Volume of Prism A = 340 cm³.

Hence, the volume of Prism A is 340 cm³.

there are lots of ways.   pick's theorem tells us if the vertices are lattice points the area a is

a = b/2 + i - 1

where b is the number of boundary lattice points and i is the number of interior lattice points.

in the figure i count b=16, i=50 so

a = 8 + 50 - 1 = 57

let's try the shoelace formula.   the area is half the sum of the cross products of the sides.  

a(-2,6)   -2(2)-6(-5) = 26

b(-5,2)   -5(-3) - 2(-2) = 19

c(-2,-3) -2(-3) - (-3)(4) = 18

d(4,-3)   4(3) - (-3)(5) = 27

e(5,3)   5(3) - 3(1) = 12

f(1,3)     1(6) - 3(-2) = 12

a(-2,6)

each of the cross products is twice the area of the triangle with the associated side and one vertex the origin. so the area of abo=26/2=13.

area = (1/2) (26 + 19 +   18 + 27 + 12 + 12) = 57

that checks!

dwe

step-by-step explanation:

ewd