Question

Please help me it is a fairly easy problem

Answer 1

a=5

b=6

c=3

d=4

surface area: 105.24

Answer 2

Area of the right triangular prism = 84 cm²

Explanation:

A is the width of the right side rectangle = 4 cm

B is the length of the rectangle = 6 cm

C is the base of the triangle = 3 cm

D is width of the middle rectangle = 5 cm

b) Area of rectangle = length *width

`\sf Area \ of \ triangle = (1)/(2)*base *height\\\\Area of 2 triangles = 2 *(1)/(2)*base * height = base * height`

Surface area of the right triangular prism = area of 2 triangle + area of left rectangle + area of middle rectangle + area of right rectangle

= 3 * 4 + 3*6 + 5 * 6 + 4 *6

= 12 + 18 + 30 + 24

= 84 cm²