Question

find the surface area of the following: math monks 15 m 7 m 5 m 215 cm² 525 cm² 27 cm² 430 cm² rewatch

Explanation:

Step1: Recall surface - area formula

The surface - area formula of a rectangular prism is $SA = 2(lw+lh + wh)$, where $l$ is the length, $w$ is the width, and $h$ is the height. Here, $l = 15$ m, $w = 7$ m, and $h = 5$ m.

Step2: Calculate $lw$

$lw=15\times7 = 105$ m²

Step3: Calculate $lh$

$lh = 15\times5=75$ m²

Step4: Calculate $wh$

$wh=7\times5 = 35$ m²

Step5: Substitute into formula

$SA=2(105 + 75+35)$
$SA=2\times(215)$
$SA = 430$ m². Note that the units in the options are wrong as the calculated area is in m² but we assume it's a unit - error in options and the numerical value is what matters.

Answer:

430 m² (corresponding to the option with numerical value 430 in the given choices after ignoring the wrong cm² units in options)