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2 years ago

What is the surface area of prism below?

Mathematics

2 answers:

valkas [14]2 years ago

6 0

Answer:

240 cm^2

Step-by-step explanation:

Comment

There are 2 ends that are in the shape of a triangle

There is 1 base that is rectangular

There are 2 roof tops that are rectangular in shape.

Find the area of the triangles, base, 2 roof parts.

Solution

1 base

w = 4 cm

L = 12 cm

Area = L*w

Area = 12*4

Area = 48 cm^2

Two Triangles

B = 4 cm

H = 6 cm

Area = 1/2 b * h

Area = 1/2 6 * 4

Area = 12 cm

But there are 2 triangles

Area 2 triangles 24 cm^2

Two roof tops

L = 12 cm

w = 7 cm

Area = L*w for one roof top

Area = 12*7 cm

Area = 84 cm^2

But there are 2 of them 168 cm^2

Total Area 240 cm^2

nadya68 [22]2 years ago

3 0

Answer:

The surface area of a prism is given as S = (2 × Base Area) + (Base perimeter × height) where S represent the surface area

Step-by-step explanation:

2x48+32x6

96+32x6

=768

if I am right mark it as brainliest and if I am not then we all learn everyday I am just glad I did my best

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Simplify the expression 6C2

iVinArrow [24]

Answer:

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Step-by-step explanation:

Recall the formula:

$^nC_r=\frac{n!}{(n-r)!r!}$

We apply this formula to simplify $^6C_2$

This implies that:

$^6C_2=\frac{6!}{(6-2)!2!}$

$^6C_2=\frac{6!}{4!2!}$

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This simplifies to

$^6C_2=\frac{6\times5}{2\times1}$

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3 years ago

Factorise 9f²-12f plus 4

Komok [63]

Answer:

(3f - 2)²

Step-by-step explanation:

Given

9f² - 12f + 4

Consider the factors of the product of the coefficient of the f² term and the constant term which sum to give the coefficient of the f- term.

product = 9 × 4 = 36 and sum = - 12

The factors are - 6 and - 6

Use these factors to split the f- term

9f² - 6t - 6t + 4 ( factor the first/second and third/fourth terms )

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3 years ago

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8090 [49]

Answer:

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Step-by-step explanation:

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adelina 88 [10]

Answer: 0.81859

Step-by-step explanation:

Using the formula ;

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Therefore the probability that a student will finish the test between 40 and 70 will be :

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Step-by-step explanation:

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