Can someone tell me the surface area and volume for these? i need the steps and formula as well. me.

1st pic

Triangle prism

a triangular end with a base of 27 mm and a height of 23 mm.

the length of each side is 56 mm and the width of each side is 27 mm

SA=bh+(s1+s2+s3)H

SA=(27)(23)+(27+27+27)(56)

SA= 621 + 4536

SA=5157 mm^2

V = ½ blh

V = ½ (27)(23)(56)

V = 17388 mm^3

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this

25.2

step-by-step explanation:

2+4x6-8/10= 25.2