Question

please help me answer both please........ it's urgent ​

Answer 1

Answer:

1. 8cm

2. 60

these are the answers for both the parts

Answer 2

$1 . \: area \: of \: triangle = {20cm}^{2} \\ base \: of \: triangle = 20cm \\ now \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \: a = \frac{1}{2} bh \\ \\ 20 {cm}^{2} = \: \frac{1}{2} (20)h \\ \\ 20 {cm}^{2} = \frac{20}{2} h \\ \\ {20cm}^{2} = 10h \\ \\ 20cm = \sqrt{10h} \\ 20cm = 5h \\ \frac{20}{5} cm = h \\ 4cm = h \\ so \: the \: height \: of \: triangle = 4cm$