-8: MathXL for School: Practice & Problem Solving Assignment is past due (03/25/219:00
8.8.PS-14
Question Help
A box has the shape of a rectangular prism with height 30 cm. If the
height is increased by 0.4 cm, by how much does the surface area of
the box increase?
30 cm
13 cm
46 cm
Use pencil and paper. Show your work. Then show a second way to
solve the problem. Explain which way you like better and why.
The surface area increases by cm2.
Fnter your answer in the answer box and then click Check Answer.

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus

answer: b f g .

step-by-step explanation: