F*
Consider an isosceles triangle ABC with A as its main vertex. What is the area of this triangle
sides measures 18 cm and the base measures 14 crn?
if one of the two congruent
716-O8 cm2
8.
Determine the area of an equilateral triangle which has
gF.
A window washer places the foot of his extendible ladder 3 m from the
wall of a building. To reach the first window, the lengh of the ladder is
5 metres. what will the length of the ladder be to reach the second
window located 8 metres higher than the first?
a
36 cm
side.
567.18 cm2
12.37 m
€
S.
,q biilboard is secured to the ground by two cables, one
measuring 8 m and the other 14 m long, as indicated in the
foliowing figure. The billboard is 6 m from the ground.What
is the distance / between the two locations where the cables
are secured to the ground?
77.94 m
t t . Th" area of the following circle centered at O is 100r cm2.
The triangle ABC is isosceles with a right angle at B. What is the
perimeter of this triangle?
48.28 cm
I €- In the following figure, ABCD is a
square with sides
measuring 36 cm. The segment AE measures 45 cm.
Calculate the distance between points BandE
72.56 cm
E
D
ffi. Determine the perimeter of an equilateral triangle with an altitude of 10 cm.
ts ffi. fhe sides AB and BC of the right angle in triangle ABC, inscribed in the
S
34-64 cm
circle with centre O, measure 14 cm and 48 cm respectively.
Calculate the area of the shaded region.
Chqpter
I
Real numbers
7627.5 cm2
O Guerin, editeur ltee
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