Find the surface area of the regular pyramid shown in the accompanying diagram. If necessary, express your answer in simplest radical form.

The area of the pyramid is 360 unit²

Step-by-step explanation:

Given

Base Edge, a = 10

Height, h = 12

Required

Determine the surface area

The surface area of a regular pyramid is calculated as thus;

Substitute values for a and h

Evaluate all squares

Take positive square root of 169

Hence, the area of the pyramid is 360 unit²

the answer is $42.96

step-by-step explanation:

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).