Question

guided practice
right rectangular prism
use the formula l.a. = p*h to find the lateral area of the prism.
type your answer and then click or tap done.
surface areas of prisms and cylinders

Explanation:

Step1: Identify base perimeter

Base is rectangle: $p = 2(4 + 5) = 18$ mm

Step2: Identify height

Height of prism: $h = 5$ mm

Step3: Calculate lateral area

$L.A. = p \times h = 18 \times 5 = 90$ mm²

Wait, correction: Wait, the base sides are 4,5, height 5? No, right rectangular prism lateral area is perimeter of base times height. Wait base is 4x5, perimeter 2(4+5)=18, height 5: 185=90. Yes, that's correct.

Step1: Compute base perimeter

$p = 2(4 + 5) = 18$ mm

Step2: Multiply by prism height

$L.A. = 18 \times 5 = 90$ mm²

Answer:

130 mm²