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SAI International School
CLASS - X

Mathematics
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CHAPTER-6: Triangless-3
HOME ASSIGNMENT-3
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SUBTOPIC :Area of Similar Triangless
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6 c
6 c
8 c
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45 c
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1.In ΔABC shown in figure, DE ‖ BC. If BC = 8 cm, DE = 6 cm and area of ΔADE = 45 cmm ,
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what is the area of ΔABC?

Ans.80 sq.cm
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2. If the areas of two similar triangles are in ratio 25 : 64, write the ratio of their
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corresponding sides.
Ans.5/8

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3.In the given figure, ΔABC and ΔDEF are similar, BC = 3 cm, EF = 4 cm and area of ΔABC
Δ
B
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= 54 cm . Determine the area of ΔDEF..
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Ans.96 sq.cm
4.

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ABC is a triangle in which , BC = 12 cm and AC = 5 cm. Find the ratio

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5

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of the areas of ANC and ABC..(Ans.25/144)
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5.In fig5, , if the area of xyz is 32 cm , then find the area of the
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quadrilateral PYZQ.
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