Question

the surface area of figure will be​

Answer 1

Answer:

Step-by-step explanation:

Ok, so it's a triangle on a semicircle and we hafta find the surface area of the figure or simply the area of the figure.

Given,

Height = 4 unit

Base = 5 unit

So, area of the triangle is given by

1/2 × base × height

1/2 × 5 × 4

10 unit sq.

So, the area of the triangle is 10 sq. unit.

Now, we have to find area of the semicircle.

Area of semicircle = π × r^2 / 2

Putting values

(22/7) × (25/4) × 1/2

275/28

9.82

So, the area of the semi circle is 9.82 sq. unit.

Total area = area of the rectangle + area of the semicircle

10 + 9.82

19.82 sq. unit is the total area of the figure.