Question

40 points please help me find each area of the triangle

Answer 1

9. 1/2 x 8 x 10 = 40 in²

10. 1/2 x 7 x 9 = 31.5 yd²

11. 1/2 x 12 x 8 = 48 cm²

12. 1/2 x 3 x 16 = 24 ft²