Diện tích xung quanh là :
$S_{xq}$ = ( $3,2$ + $2,6$ ) × $2$ × $1,3$ = $15,08$ ( $m^{2}$ )
Diện tích toàn phần là :
$S_{tp}$ = $15,08$ + $3,2$ × $2,6$ × $2$ = $31,72$ ( $m^{2}$ )
Đáp số : $S_{xq}$ =$15,08$$m^{2}$
$S_{tp}$ = $31,72$$m^{2}$
Đáp án:
Diện tích xung quanh của hình hộp chữ nhật đó : $( 3,2 + 2,6 ) * 2 * 1,3 = 15,08 ( m² ).$ Diện tích toàn phần của hình hộp chữ nhật đó : $3,2× 2,6 × 2 = 31,72 ( m² ).$ Đáp số: $15,08 ( m² ).$ $33 ( m² ).$
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