Camille's Surface Area

Solution:

T- TOP

S- SIDE

F- FRONT

Find the Lenth and Width for each one.

Top- 5 (width) 10 (length)

Side- 6 (width) 5 (lenth)

Front- 6 (width) 10 (length)

Then multiply them

5 x 10 = 50

6 x 5 = 30

6 x 10 = 60

After you get the answer, add them together.

50 + 30 + 60 = 140

Then multiply it by 2, you get 280m²

So, your answer is 280m²

Solution:

Find the sides of the Triangle.

First side- 5 (length) 10 (width)

Second side- 5 (length) 9 (width)

Last side- 5 (length) 8 (width)

After you get the Length and Width, add them all up.

10 + 9 + 8 = 27cm

When you get the answer, multiply the answer by the length.

27 x 5 = 135cm²

Now, find the bxh.

9 (height) 8 (base)

B x H * 2 ( * - divide )

9 x 8 = 72

Now, divide 72 by 2.

Answer- 36cm

Take 135cm² and add 36cm twice.

135 + 36 + 36 = 207cm²

207cm² (answer)

Solution:

Find the top circle of the Cylinder and the bottom.

The diameter of the circle is 8. You have to find the Radius, by dividing the diameter by 2.

8 (diameter) * 2 = 4 (radius)

Now, find the body of the Cylinder.

The width of the rectangle (body) is 12mm

Find the circumference by multiply the pi and the diameter.

3.14 x 8

C = 25.12mm

Now, find the area of the rectangle.

Length x Width

25.12 x 12 = 301.44mm²

After that, find the Area of the circle.

Pi x radius²

3.14 x 4²

3.14 x 16

= 50.24mm²

Now, the body (rectangle) and the area of the cirlce, add all them up. But you need to add up the answer from Area of the circle.

301.44 + 50.24 + 50.24

= 401.92mm²

Volumes:

Volume of Triangle

Formula:

Area of base *multiply* height

Find the base and the height

base- 3cm

height- 5cm

Now find the other height. The height is 8.5cm

Multiply the base and the height (bxh) after you get the answer, which 15. Then divide it 2. (15 divided by 2 )The answer is 7.5. Now multiply 7.5 to 8.5cm. Equals to 63.75cm³

Volume of Rectangle

This formula is very easy. Just multiply the Length and the Width and the Height.

20x8x16 = 2560cm³

Volume of Triangle with fraction

Formula:

The formula is the same as the Volume of Triangle.

But if there's a fraction with it, you have to do is, find the decimal of the fraction. (3*8= 0.375cm)

After you get the decimal of the fraction, multiply it by the answer you got (104cm³)

104 x 0.375 = 39cm³

Volume of Cylinder

Formula:

d2 = r

12 * 2 =

6= radius

pi r2 x h

3.14 x 6 x 6 x 15

3.14 x 36 x 15

= 1695.6cm³