REVISION PROBLEMS
To find the perimeter of any shape with straight edges all we have to do is add up all the sides,
so this shape would be 11cm+31cm+15cm+14cm+11cm+14cm+15cm+24cm+26cm+7cm=169cm or 1.69m
so this shape would be 11cm+31cm+15cm+14cm+11cm+14cm+15cm+24cm+26cm+7cm=169cm or 1.69m
all that needs to be known to complete this that every triangles angles no matter the size, all add up to 180o. So knowing that we can work out that 80+76=156o and the left over angle number must be 24o because 80+76+24=180o
To get the circumference of a circle it is simply just the diameter of the circle times pi.
So the diameter is 12 so you time 12 by pi and you have the circumference.
π x 12cm = 37.399cm
So the diameter is 12 so you time 12 by pi and you have the circumference.
π x 12cm = 37.399cm
This means (2 to the power of 4) divided by (2 to the power of 2). To simplify this we have to get it to juts one power of 2. When dividing indices we just take away one of the indices from each other so it would be 4-2 so 2 is the new index and the simplified answer is (2 to the power of 2)
100/20=5
20x5=100
17x5=85
17/20 = 85/100
=85%
20x5=100
17x5=85
17/20 = 85/100
=85%