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8. Find the area of an equilateral triangle of side (1) 4 cm (1) 5 cm (111) 7 cm correct to two(11) base = 6 cm and hypotenuse = 10 cm(LL) perpendicular = 60 cm andhypotenuse = 61 cm.places of decimal. (Use 3 = 1.732.)length of its sideS |
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Answer» FORMULA OF EQUILATERAL TRIANGLE root3/4 × (side)^2root3/4×(side)
Value of √3 = 1.732Valueof√3=1.732 1) Side = 4cm 》1.732/4 × 16 = 6.928 cm 2) Side = 5cm 》1.732/4 × 25 = 10.825 cm 3) Side = 7cm 》1.732/4 × 49 = 21.217 cm BE BRAINLYBEBRAINLY |
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