Mathematics, 09.08.2021 02:20 nnaaatt1845

Oab is a sector of a circle with center O and radius 7cm. The area of the sector is 40cm^2. Calculate the perimeter of the sector. Give your answer correct to 2 signficant figures.

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Oab is a sector of a circle with center O and radius 7cm. The area of the sector is 40cm^2. Calculat...