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Answer:
- Surface Area is 272 cm² .
Explanation:
In this question we are provided with length 4 cm , height 15 cm and width 4 cm which are basically of a cuboid.
And we are asked to find the Surface Area . For finding surface area of cuboid we need to know its formula . So ,
![\quad \underline{ \boxed{ \frak{Surface \: Area_((Cuboid)) = 2 ( lw + wh + hl )}}}](https://img.qammunity.org/2023/formulas/mathematics/high-school/9glm98njapzvfevftel4fngfuos4i6z3mc.png)
Where ,
SOLUTION : -
Step 1 : Substituting value of length , width and height in formula :
![\quad \: \longmapsto \: \qquad2((4 * 4) + (4 * 15) + (4 * 15)](https://img.qammunity.org/2023/formulas/mathematics/high-school/vg2nd4nf5psuu3qcz760bxqlzf4rtv8xk4.png)
Step 2 : Solving parenthesis :
![\quad \: \longmapsto \: \qquad2(16 + 60 + 60)](https://img.qammunity.org/2023/formulas/mathematics/high-school/qffpt0hi7fk2gycrothufukawmym0nm2yr.png)
Adding 16 , 60 and 60 :
![\quad \: \longmapsto \: \qquad2(136)](https://img.qammunity.org/2023/formulas/mathematics/high-school/p405mf80ml5i4fx0kt610mldkad9gjfu7f.png)
Step 3 : Multiplying 2 with 136 :
![\quad \: \longmapsto \: \qquad \: \blue{ \underline{ \boxed{ \frak{272 \: cm {}^(2) }}}} \quad \bigstar](https://img.qammunity.org/2023/formulas/mathematics/high-school/gpxr515wem2g1kbw5fmjl7brqlpc4xv7uh.png)
- Henceforth , surface area is ❝ 272 cm² ❞.
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