Answer:
The surface area of the prism is ![S = 502 mm^2](https://tex.z-dn.net/?f=S%20%3D%20502%20mm%5E2)
Step-by-step explanation:
Given:
Length of the prism = 8mm
Width of the prism = 13mm
Height of the prism = 7mm
To Find:
The surface area of the prism = ?
Solution:
Surface area of a prism is given by
S =2 ( lw + wh + hl )
Substituting the values we get,
![S = 2[(8\times 13 )+ (13 \times7) + (7\times 8)]](https://tex.z-dn.net/?f=S%20%3D%202%5B%288%5Ctimes%2013%20%29%2B%20%2813%20%5Ctimes7%29%20%2B%20%287%5Ctimes%208%29%5D)
![S = 2[(104 )+ (91) + (56)]](https://tex.z-dn.net/?f=S%20%3D%202%5B%28104%20%29%2B%20%2891%29%20%2B%20%2856%29%5D)
![S = 2(251)](https://tex.z-dn.net/?f=S%20%3D%202%28251%29)
![S = 502 mm^2](https://tex.z-dn.net/?f=S%20%3D%20502%20mm%5E2)
Answer:
1
Step-by-step explanation:
hope it helps
.........gwenchana...
(difference of Number and 7)=( n-7)=21
Hence C) n-7=21
n=21+7
n=28
20x 10 to the third power equals 20000