find area of a triangle whose two sides are 18 cm and 10cm and perimeter is 42cm step by step for class 9

Find the length of the 3rd side:

3rd side = 42-18-10 = 14 cm

The two shorter sides are the base and the height.

Area of triangle = 1/2 x base height

Area =1/2 x 10 x 14

Area = 70 square cm

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.

explanation:

step-by-step explanation: