Question

Please help me with this one

Answer 1

2×5×7+2×5×2+2×7×2

70+20+28

108cm^2

Answer 2

`\huge\boxed{\mathfrak{Answer}}`

`l = 5 \: cm \\ w = 2 \: cm \\ h = 7 \: cm`

The formula to find SA => 2lh + 2lw + 2hw

`SA => 2lh + 2lw + 2hw \\ = 2 * 5 * 7 + 2 * 5 * 2 + 2 * 7 * 2 \\ = 70 + 20 + 28 \\ = 118 \: \: cm {}^(2)`

=> The surface area of the rectangular prism is 118 cm².