Afloral design on a floor is made up of 16 tiles which are triangular. the side is the tiles measure 9cm, 28cm, 35cm. use heron’s formula to find the total are of the 16 tile floral design. round your answer to the nearest tenth.

heron's formula is

where

in the given question ,

so

substirtuting the values of a,b,c and s, we will get

and of 16 tiles, the area is

∡ eia and ∡ kij are congruent

step-by-step explanation:

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