Question

if the lenght and diagonal of a rectangle are 143m and 145m , respectively, find its area and perimetere.​

Answer 1

Step-by-step explanation:

$length = 143 \: m \\ diagonal = 145m \\ area = find \\ diagonal = \sqrt{ {a}^{2} + {b}^{2} } \\ 145 = \sqrt{ {143}^{2} + {b}^{2} } \\square \: both \: side \\ 145 \times 145 = 143 \times 143 + {b }^{2} \\ 145 \times 145 - 143 \times 143 = {b }^{2} \\ 576 = {b}^{2} \\ b = 24 \\ \\ area = a \times b \\ area = 143 \times 24 \\ area = 3432 \: {m}^{2}$

perimeter=2(l+b)

perimeter=2(143+24)

perimeter=2×167

perimeter=334