15. 9.5 m D. -18.2 m-

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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Do question 15 

PORST is a regular pentagon (i.e. a plane figure
with 5 equal sides) inscribed in a circle
centre O. radius 37 cm. M is the mid-point of
29.9 cm.
%3D
RS and MO
(a) Calculate: (i) MR
(b) Hence, determine the perimeter of the
(ii) RS
pentagon.
15.
9.5 m
A
C
18.2 m-
Fig. 9.214 End of a house
Fig. 9.214 illustrates the cross-section of a
building of width DE = 18.2 m and roof slope
AB = 9.5 m. Calculate the altitude BF of the roof.
%3D
Quadrilateral
A quadrilateral is a plane shape (or figure) bounded
by four straight lines.
A quadrilateral can also be defined as a fouraridod
polygon.
Transcribed Image Text:PORST is a regular pentagon (i.e. a plane figure with 5 equal sides) inscribed in a circle centre O. radius 37 cm. M is the mid-point of 29.9 cm. %3D RS and MO (a) Calculate: (i) MR (b) Hence, determine the perimeter of the (ii) RS pentagon. 15. 9.5 m A C 18.2 m- Fig. 9.214 End of a house Fig. 9.214 illustrates the cross-section of a building of width DE = 18.2 m and roof slope AB = 9.5 m. Calculate the altitude BF of the roof. %3D Quadrilateral A quadrilateral is a plane shape (or figure) bounded by four straight lines. A quadrilateral can also be defined as a fouraridod polygon.
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