Unit Test #46

Select your answers to the following 5 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.


The five questions below apply to the diagram in question 1.



The diagram shows a regular heptagon (7 sided polygon) inside a circle.

What is the size of each angle (x) made at the centre, O (to 1 d.p.)?

A. 51.4°

B. 25.7°

C. 64.3°

D. 38.6°

Answer 1:




Which trigonometric rule would be best to use to find the length ED?

A. double angle formula

B. area formula

C. cosine rule

D. none of the above

Answer 2:




What is the area of triangle OED?

A. 32 units2

B. 50 units2

C. 225 units2

D. 25 units2

Answer 3:




Find the length of ED ( to 3 sig. figs.).

A. 48.1 cm

B. 6.94 cm

C. 48.2 cm

D. 6.93 cm

Answer 4:




What is the perimeter of the heptagon ( to 3 sig. figs.)?

A. 48.6 cm

B. 337 cm

C. 56 cm

D. 201 cm

Answer 5: