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3 years ago

Find the total surface area of a cuboidal room whose

Mathematics

1 answer:

denpristay [2]3 years ago

8 0

Answer:

174cm^2

Step-by-step explanation:

Given data

L=9m

W=5m

H=3m

The formula for the total surface area of a cuboid is

SA=2lw+2lh+2hw

substitute

SA=2*9*5+2*9*3+2*3*5

SA= 90+54+30

SA= 174cm^2

Hence the surface area is 174cm^2

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Answer: Part a) $P(a)=\frac{1}{\binom{r+w}{r}}$

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For part 2 we have to figure out how many ways are there to draw a white ball among (r) red balls which is obtained by permutations of 1 white ball among (r) red balls which equals $\binom{r}{r-1}$

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