Question

please help me i need urgent​

Answer 1

$area = 105 {cm}^{2} \\ a = 5cm \\ b = 9cm \\ area \: \: of \: trapezium \: = \frac{1}{2} \times (a + b) \times h \\ 105 = \frac{1}{2} \times (5 + 9) \times h \\ 105 = \frac{1}{2} \times 14 \times h \\ 105 = 7h \\ h = \frac{105}{7} \\ h = 15cm \\ height \: = 15cm$