Answer:
189
Step-by-step explanation:
step 1: calculate area of rectangle
Area = l × b
= 10× 15
= 150
step 2: calculate area of half a circle
Area = 1/2 (π.r²)
= 1/2 (22/7 × 5²)
=157/4
step 3: Add the area of rectangle and half a circle together
Area = 157/4 + 150
= 189.26
rounded off to the nearest whole = 189
Answer: 4
Step -by-step :
7+7+7=21
5+12+a=
17+a
21-17=4
