Question

ABCD is a rectangular park in a residential society, with

AD= 9m. On one side, a triangular flower bed CEB is to

be made such that LBEC= 60°. Find the perimeter of the

flower bed.​

Answer 1

Answer:

27

Step-by-step explanation:

in rect. ABCD

AD=BC=9m

L CEB = 60°

since L CEB is 60° and joins directly to BC

we now have an equilateral ∆ BEC

so, BE=EC=CB

and we know BC = 9m

therefore, perimeter of a triangle = a+b+c

= BE+EC+CB

= 9m+9m+9m

= 27m.