Maths

People at a conference are to sit around circular tables. 100 people are invited to the conference, and each person needs 0.45m around the table's circumference.

a. Each table has a diameter of 2.5m, Find the circumference of one table.

• $78.5m$

• $7.85m$

• $3.93m$

• $4.91m^2$

People at a conference are to sit around circular tables. 100 people are invited to the conference, and each person needs 0.45m around the table's circumference.


b. How many people can fit on one table if the circumference of one table is 7.85m

•  $17$ 

•  $18$ 

•  $16$ 

•  $19$ 

People at a conference are to sit around circular tables. 100 people are invited to the conference, and each person needs 0.45m around the table's circumference.


c. If 17 people fit on one table, how many tables are required to fit the 100 people?

•  $5$ 

•  $7$ 

•  $6$ 

•  $8$ 

Taking π = 3.14, find the circumference of a circle of the following diameter.

Diameter = 9cm

Find the circumference of a tyre if its diameter is 50cm. (π = 3,14)

Which one of these lines is a diameter?

• OA

• OB

• AC

• AB

Find the perimeter

• 25cm
• 35cm
• 50cm
• 100cm

The distance around an object is called the 

• area
• perimeter

The space inside an object is called it's

• area
• perimeter