Question

Find the lateral area of the regular pyramid shown in the accompanying diagram. If necessary, express your answer in simplest radical form.A. 1080 units²B. 540 units²C. 90 units²D. 360+643–√ units²

Answer 1

Lateral Area (LA):

• Perimeter of base ( ,P ,) = 12 * 6 = 72

,

• Height ( ,l ,), ,= 15

`LA=(1)/(2)\cdot P* l=(1)/(2)\cdot72\cdot15=540`

Answer: B. 540 units^2