I need help correcting my math homework. I have been out sick and was told that I have to have it done by monday and I missed alot. I don't know how to do this. It's surface areas and volume and solids and triangle and prisms.
Please post two or three of your problems. Show us how you think they can be solved. Be sure to check your book to be sure.
Someone will be glad to help you then.
What is the surface area of a pyramid whose base is a square with sides measuring 15 yards and with a slant height of 18 yards?
15*18=270*3=810
Determining the volume of a cone to the nearest tenth, if the diameter of the base is 50.8 cm and the cone is 76.2 cm tall.
.3x50.8x76.2 = 38611.1 cm^3
A model scale has a scale of 1 cm = 30 cm and a volume of 200 cm^3. Find the volume of the actual solid. 30cm x 200 cm^3 = 6000 cm^3
So I guess no one could help me. We already turned our books in so I can't even look at that an this is due tomorrow. Well thank you anyway.
I can definitely help you with that! Surface areas, volumes, and solids can be tricky, but with a little explanation and practice, you'll be able to tackle your math homework in no time.
To start, let's break it down into smaller parts. We'll address surface area, volume, and various shapes such as triangles and prisms. Here's what you need to know:
1. Surface Area: To calculate the surface area of a solid object, you need to find the sum of the areas of all its faces. Each shape has a specific formula, so it's important to identify the shape first.
- Rectangular Prism: The formula for the surface area of a rectangular prism is 2 * (length * width + length * height + width * height)
- Cylinder: The formula for the surface area of a cylinder is 2 * pi * radius * (radius + height)
- Sphere: The formula for the surface area of a sphere is 4 * pi * radius^2
2. Volume: Volume refers to the amount of space occupied by a solid figure. Again, each shape has a specific formula.
- Rectangular Prism: The formula for the volume of a rectangular prism is length * width * height.
- Cylinder: The formula for the volume of a cylinder is pi * radius^2 * height.
- Sphere: The formula for the volume of a sphere is (4/3) * pi * radius^3.
3. Triangles: Triangles have their own formulas for calculating area, depending on various factors.
- Area of a Triangle: The formula for the area of a triangle is (1/2) * base * height.
- Pythagorean Theorem: For a right-angled triangle, you can use the Pythagorean theorem to find the length of an unknown side. The formula is a^2 + b^2 = c^2, where a and b are the lengths of the two sides of the right angle, and c is the hypotenuse.
With these formulas in mind, you can approach your math homework step by step:
1. Identify the shape or solid involved.
2. Determine whether you need to find the surface area or volume.
3. Apply the appropriate formula or formulas to calculate the desired value.
4. Double-check your work and ensure your units are correct.
Remember, practice makes perfect. Consider using online resources, textbooks, or asking a teacher or classmate for guidance if you get stuck on a particular problem. Good luck, and I hope this explanation helps you with your math homework!