A regular triangular pyramid has slant height 6 cm and base edges of length 15 cm. Find volume and surface area

10 points? me . its important ‼️‼️

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.

Pls as soon as ! will award brainliest and 20 ! also the answer is not 22.5 degrees! find the value of x in each case: