(c) Calculate (i) the area of the triangle DOC, ст Answer(c)(i) (ii) the area of the pentagon ABCDE, cm Answer(c)(ii) (iii) the area of the sector ODC,

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
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Mathematics Paper 4 (extended)
4.1 GEOMETRY: POLYGONS
2012 N Q1
ge 2
page 3
POLYGONS + TRIGONOMETRY
NOT TO
SCALE
E
7 cm
D
C
Y
The vertices A, B, C, D and E of a regular pentagon lie on the circumference of a circle, centre 0,
radius 7 cm.
They also lie on the sides of a rectangle WXYZ.
Transcribed Image Text:Mathematics Paper 4 (extended) 4.1 GEOMETRY: POLYGONS 2012 N Q1 ge 2 page 3 POLYGONS + TRIGONOMETRY NOT TO SCALE E 7 cm D C Y The vertices A, B, C, D and E of a regular pentagon lie on the circumference of a circle, centre 0, radius 7 cm. They also lie on the sides of a rectangle WXYZ.
(c) Calculate
(i) the area of the triangle DOC,
cm2
Answer(c)(i)
(ii) the area of the pentagon ABCDE,
(iii) the area of the sector ODC,
2.
cm
Answer(c)(ii)
(iv) the length XY.
Answer(c)(iii)
cm
Answer(c)(iv)
(d) Calculate the ratio
cm
area of the pentagon ABCDE: area of the rectangle WXYZ.
Give your answer in the form 1 : n.
KS VEN
To order nlearo o
Answer(d) 1:
Transcribed Image Text:(c) Calculate (i) the area of the triangle DOC, cm2 Answer(c)(i) (ii) the area of the pentagon ABCDE, (iii) the area of the sector ODC, 2. cm Answer(c)(ii) (iv) the length XY. Answer(c)(iii) cm Answer(c)(iv) (d) Calculate the ratio cm area of the pentagon ABCDE: area of the rectangle WXYZ. Give your answer in the form 1 : n. KS VEN To order nlearo o Answer(d) 1:
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