Will mark BRAINLIEST!

Rectangular prism is a cuboid.

Surface area of a cuboid = 2lw+2wh+2hl

So, here,

Surface area = 2lw+2wh+2hl

=> Surface area = [2(10cm)(3cm)] + [2(3cm)(20cm)] + [2(20cm)(10cm)]

=> Surface area = 60cm² + 120cm² + 400cm²

=> Surface area = 580cm²

Surface area =2( 200+30+60) = 580 cm³

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.