Today in maths we had to answer questions about like terms. Like terms are algebraic terms where you have an equation like 6n + 6n and but since you don’t know what n equals you would just add the to six’s together to get 12n. Here is an equation we had, 3w + 7 – 9w = -6w + 7.
Today in maths we had to calculate the missing angles in lots of triangles, there were isosceles, scalene and right angle triangles it the list. Because every angle in a triangle adds up to 180°, so with the isosceles triangles we had to subtract the angle that was shown already from 180 and divide that by two to get the two missing angles. With the scalene triangles, we had two angles already shown and we had to subtract them from 180 and then we got the missing one. For the right angle triangles, we were given one angle but we knew that one of them was 90°, so we subtracted the two angles we knew from 180 and then we got the missing one from them.
Today in maths we had to find the circumference of two circles and their area, here is how I worked out both of them,
Diameter = 92cm(small)
Circumference = 92cm x 3.14 =288.88cm
Area = 92cm ÷ 2 = 46cm
46cm x 46cm x 3.14 = 6644.24sqcm
Diameter = 339cm(Large)
Circumference = 339cm x 3.14 = 1064.46cm
Area = 339 ÷ 2 = 169.5cm
169.5cm x 169.5cm x 3.14 = 90212.985sqcm
After we found the two areas we had to get the area of the big circle and subtract the area of the small circle, here is the answer,
90212.985sqcm – 6644.24sqcm = 83568.745 sq cm
Here is some more work we did on a worksheet,
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