Tuesday, 27 March 2012

How do we find surface area & lateral area of prisms and cylinders?

Lateral area would be the area of the non- bases. Prisms lateral area is equal to perimeter times height. Surface area is equal to lateral area plus the two bases.

How do we identify solids?

Solids are called three- dimensional figures with a width, depth and height. The volume would how much of it would be able to hold water for example. The surface area is the outside like for example painting it. There are two groups of solids polyhedra or non-polyhedra. Polyhedra have flat faces were the other has no flat surface. A prism have two bases were a pyramid have one.

How do we solve compound area problems?

In shapes there could be figures inscribed in one another or attach. If there attached you would add both there total areas. If its inscribed like a circle into a square and your given the radius you would use the radius. The radius would be half the length of the square. So if the radius is nine you would times it by two and get a sum of eighteen the length, width and the diameter. So the square would be 324. The area of the circle would be 81(pie).
That would be how you find the area.

How do we find the area of a circle?

The circle area conjuncture is the area of a circle that is given in the formula A=(pie)r^2. You would use r^2 to make up the length of the whole circle. That's basically the equation used to solve the area of a circle.

How do we find the area of parallelogram, kites and trapesoids?

The area of parallelograms is A=bh which is the same as a rectangle. :0 what you say? Yes it's the same thing basically.
Trapezoids are quiderlaterals with one pair of equal sides. You would use A= (b1+b2/2)*h. You would add the bases because in Trapezoids there not the same. You'd divide by two to find the median of the trapezoid. Then the height would be needed to know how big the trapezoid is.

Kites is a shape with two pairs of congruent adjust sizes. Diagonals are segments that connect non- adjusted sides. A=d1*d2/2. D as in diagonals

How do we calculate area of rectangles and triangles?

To calculate are of a rectangles you would time the base times height. Also known as B*h or you could use length times width.

For triangles for the area you use to equation A= 1/2bh. You'd divide the base times the height. In order to find the area

Thursday, 15 March 2012

What is logic?

What is logic?
Logic is thinking.  Logic is a tool to determine the difference between truth and lies.
With in that is mathematical statements.  In that are conditional, inverse, converse, and contrapostive.

What is a mathematical statement?

What is a mathematical statement?
Mathematical statement is a statement that can be proven true or false.  Such as 45-24= 0 would be false. An open sentence is where both statements are true. Conditional is a statement constructed of an argument or study of mathematics.
•the conditional
• the inverse
• the converse
• the contrapostive
All are part of mathematical statements

How do we solve problems using conditionals?

How do we solve logic problems using conditionals?
Conditional are statements constructed that can be an argument.

You could do the inverse which is adding nots to both statements.
Or the converse is switching the conclusion and hypothesis.
Or last the contrapostive which is both the inverse and converse in one.

How do we solve logic problems using conditionals?

How do we solve logic problems using conditionals?
Conditional are statements constructed that can be an argument.

You could do the inverse which is adding nots to both statements.
Or the converse is switching the conclusion and hypothesis.
Or last the contrapostive which is both the inverse and converse in one