Area of rectangle = l x b = 7 x 5 = 35cm² =4 x 7 = 28cm² Add the area of the three rectangles = 35+35+28 =98cm² Area of triangle = 1/2 x b x h = 1/2 x 4 x 5 = 10 + 10 = 20 Therefore, area of the prism = 118cm²
Hi, there! The total surface area of that prism is 118 cm^2.
Step-by-step explanation:
The three rectangles on the side are called the lateral area, and they add up to 98(I'm assuming you know how to find the area of a 2d shape), and as for the triangles on the sides, you can just use the formula which is .
