Question 23
A company designs a glass skylight shaped as a regular square pyramid with base side $a=3$ m. Its four lateral faces are congruent isosceles triangles. Their total glass area is fixed at 10 m². What is the interior volume, rounded to two decimal places?
The following source mathematical images preserve the printed option/formula/figure variants; text and choices above or below provide clean typesetting.

The following source mathematical images preserve the printed option/formula/figure variants; text and choices above or below provide clean typesetting.
