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3 years ago

There is two questions please help me

Mathematics

2 answers:

pav-90 [236]3 years ago

3 0

36cm
13.6in. my mom helped

marshall27 [118]3 years ago

3 0

Step-by-step explanation:Answer:

As it is equilateral triangle, l₁ = l₂ = b = 6 cm

Total surface area of triangular prism= (l₁ +l₂ + b)* height

= ( 6 + 6 + 6) * 15

= 18 * 15

= 270 cm²

2) length = l = 8.2 in

Width = w = 3.4 in

height = h = 2

Total surface area of rectangular prism = 2*(lw + wh + hl)

= 2*(8.2*3.4 + 3.4*2 + 2*8.2)

=2 *( 27.88 + 6.8 + 16.4)

= 2 * 51.08

= 102.16

= 102 in²

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Nezavi [6.7K]

Answer:

8 in²

Step-by-step explanation:

The area of a triangle is always base times half height. Since this triangle has a 90° corner, the vertical 4 inch is also the height.

So area is 4*4/2 = 8

8 0

3 years ago

What is the area of a circle. Using 3.14 for. A circle with diameter of 8.4 ft.

ira [324]

Hey there! I'm happy to help!

First, let's find the radius. The radius is half of the diameter.

8.4/2=4.2

Here's how to find the area of a circle.

Square the radius.

4.2²=17.64

And multiply by pi (3.14 in our case)

17.64(3.14)=55.3896

We round to the nearest tenth, giving us an area of 55.4 ft²

Have a wonderful day! :D

5 0

3 years ago

There are 3 teachers to 125 pupils during the school program. How many teachers were

Kobotan [32]

Answer:

There were 60 teachers.

Step-by-step explanation:

☆We can use proportion to solve this!

$\frac{3 \: teachers}{125 \: pupils} = \frac{x}{2500 \: pupils} \\ \\ \frac{125x}{125} = \frac{7500}{125} \\ \\ x = 60$

5 0

3 years ago

PLEASE HELP ILL MARK YOU BRAINLIEST !!!! 30 POINTS The lengths of two sides of a triangle are shown. Side 1: 3x2 − 2x − 1 Side 2

Sindrei [870]

Answer:

Step-by-step explanation:

Part A:

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4 years ago

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igor_vitrenko [27]

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3 years ago