take pi = 22/7 and root 3 = 1.73

ar . of triangle = 49 root 3

root 3 /4 side sq. = 49 root 3

side sq. = 49 root 3 *4 /root 3 ( root 3 cancelled)

side sq. = 49*4 = 196

side = 14 cm

r = 14/2 (given)

r = 7cm

draw the fig . u wil get 3 sectors

ar of 1 sector = 77/3 cm sq. ( theta = 60)

ar 3 sectors = 77 /3 * 3 = 77cmsq ( 3 cancelled )

area of triangle not included = ar of triangle - ar of 3 sectors

= 49*root3 - 77

= 49*1.73 - 77

= 84.77 - 77

= 7.77 cm sq. (777cm sq. is wrong ans)

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