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What is the area of an equilateral trian...

What is the area of an equilateral triangle whose sides is 'a'?

A

`3a^2/2`

B

`(sqrt(3)a^2)/2`

C

`(sqrt(3)a^2)/4`

D

`3a^2`

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MODERN PUBLICATION-AREA OF PARALLELOGRAMS AND TRIANGLES-EXERCISE
  1. In a ||gm ABCD, if P and Q are mid-points of AB and CD respectively an...

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  2. The median of a triangle divides it into two

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  3. The mid-point of the sides of a triangle along with any of the vertice...

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  4. Two parallelograms are on equal bases andbetween the same parallels. T...

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  5. ABCD is a quadrilateral whose diagonal AC divides it into two parts, e...

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  6. If a triangle and a parallelogram are on the same base and between sam...

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  7. triangleABC~ trianglePQR. If ar(ABC) = 2.25 m^2. ar(PQR) = 6.25m^2,PQ ...

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  8. If triangleABC~triangleDEF, BC = 4 cm, EF = 5 cm and ar(triangleABC) =...

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  9. The area of two similar triangles ABC and PQR are 25 cm^2, 49cm^2. If ...

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  10. What is the area of an equilateral triangle whose sides is 'a'?

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  11. Tick the correct answer and justify : Sides of two similar triangles a...

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  12. In the figure, find the area of ||gm.

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  13. Two parallelograms are on equal bases andbetween the same parallels. T...

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  14. In figure. D and E are the mid-points o sides. AB, AC respectively ...

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  15. ABCD is a trapezium in which AB||DC, DC = 30 cm and AB = 50 cm. If X a...

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  16. AP||BQ||CR. Prove that ar(AQC) = ar(PBR)

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  17. ABCD is parallelogram. X and Y are the mid-points of BC and CD respect...

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  18. If the medians of a triangleABC intersect at G, show that ar(AGB) = ar...

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  19. PQRS is a ||gm. L is any point on PS and M is any point on QR. Show th...

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  20. PQRS is a ||gm. L is any point on PS and M is any point on QR. Show th...

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