Four equilateral triangles are described on the four sides of a rectangle with perimeter 12 cm. If the sum of the area of four triangles is 10 cm |
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(a) |
5cm |
(b) |
8 cm |
(c) |
9 cm |
(d) |
6.75 cm |

Four equilateral triangles are described on the four sides of a rectangle with perimeter 12 cm. If the sum of the area of four triangles is 10 cm |
|||||||

(a) |
5cm |
(b) |
8 cm |
(c) |
9 cm |
(d) |
6.75 cm |

1 Answer

127 votes

Length = breadth =

Then,

Sum of areas of the four triangles

=

Therefore,

Length = 4 cm, breadth = 2 cm.

Area of rectangle = 8 sq. cm.

127 votes

127