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Key Concept Quiz 8.1
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1
Find the area of the triangle shown. <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070973199/362686/pom9_ch8_sec1_quiz1_ques1.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (3.0K)</a>
A)192 cm2
B)96 cm2
C)48 cm2
D)28 cm2
2
Find the unknown base y of the triangle shown. <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070973199/362686/pom9_ch8_sec1_quiz1_ques2.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (4.0K)</a>
A)32 cm
B)31 cm
C)30 cm
D)28 cm
3
Find the area of the triangle in question#2.
A)240 cm2
B)272 cm2
C)480 cm2
D)544 cm2
4
Farmer Macdonald's field has been cut by a new road, as shown. Find the unknown side x. <a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070973199/362686/pom9_ch8_sec1_quiz1_ques4.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (3.0K)</a>
A)180 m
B)190 m
C)200 m
D)225 m
5
Farmer Macdonald plans to sow the field with soybeans, and expects an average yield of 1.2 kg per m2. What is the expected yield of the entire triangular field?
A)15 000 kg
B)18 000 kg
C)30 000 kg
D)36 000 kg





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