The straight line 4x + 5y - 20 = 0 cuts the x-axis at A and Y-axis at B. Find X-intercept ,Y-intercept . Hence find the area of ∆AOB

What value is equivalent to 5 + [5 × (4 + 2)]? a) 35 b) 45 c) 60 d) 110

Use the distance formula to find the distance between (-3,5) and (3,1)

Use stokes' theorem to evaluate c f · dr where c is oriented counterclockwise as viewed from above. f(x, y, z) = xyi + 5zj + 7yk, c is the curve of intersection of the plane x + z = 8 and the cylinder x2 + y2 = 81.