Geometry Answers

1.design an activity that will enable learners to discover the formula for the area of a circle.
2.in the figure is circle circumscribed to square. The side of the square is 5 units. Calculate the area of the shaded part of the figure.

1.Give two reasons why we have to teach estimation as part of measurement.
2.DIfferent techniques of estimation exist. Describe the benchmark technique for estimating a distance. Use diagrams in your discussion.
3.are the following estimation valid? If not, say what a better and more sensible estimate for the amount would be.
A, the height of the table is 74,8cm.
B,my mass is 103 000g.
C,the volume of a jug is 2250ml.

1.name two different instruments that can be used to measure time.
2.what is a cubit, and what does it measure?
3.what is the temperature of boiling water at sea level in degrees celcius? Is the boiling point at Durban and Johannesburg the same? Explain your answer.
4.what do you think of when you see the names Celsius and Fahrenheit?
5.what does SI stand for in measurement?
6.what did the Babylonians use to measure time?
7.how many squares metres in a square kilometer?
8.one inch =... Cm. Give your answer correct to two decimals.
9.what is the Tare of a truck?
10. Why is our calender called the Gregorian calender?
11.what is solstice and equinox?
12.what is a leap year? We're both the years 1990 and 2000 leap years?
13.if I say that my pencil is 10 cm long, what is the shortest possible length to two decimal places that it could be.
14.what is a hectare? Discuss.