Question

Finding the missing length

Answer 1

$\huge\colorbox{black}{ \color{white}{ANSWER}}$

we know,

$\mathfrak{\hookrightarrow { area = \dfrac{1}{2} \times (a + b) \times h }}$

where,

• a = 2 cm
• b = 5 cm
• area = 28 cm²

So,

$\hookrightarrow \mathcal{28 = \dfrac{1}{2} \times (5 + 2) \times h}$

$\hookrightarrow \mathcal{28 \times 2 = 7 \times h}$

$\hookrightarrow \mathcal{ \dfrac{56}{7} = h}$

$\hookrightarrow \mathcal{h = 8}$

so, missing lenght = 8 cm